diff options
Diffstat (limited to 'binutils-2.17/gas/config/tc-tic54x.c')
| -rw-r--r-- | binutils-2.17/gas/config/tc-tic54x.c | 5752 |
1 files changed, 0 insertions, 5752 deletions
diff --git a/binutils-2.17/gas/config/tc-tic54x.c b/binutils-2.17/gas/config/tc-tic54x.c deleted file mode 100644 index f84afcd8..00000000 --- a/binutils-2.17/gas/config/tc-tic54x.c +++ /dev/null @@ -1,5752 +0,0 @@ -/* tc-tic54x.c -- Assembly code for the Texas Instruments TMS320C54X - Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - Contributed by Timothy Wall (twall@cygnus.com) - - This file is part of GAS, the GNU Assembler. - - GAS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - GAS is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GAS; see the file COPYING. If not, write to the Free - Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA - 02110-1301, USA. */ - -/* Texas Instruments TMS320C54X machine specific gas. - Written by Timothy Wall (twall@alum.mit.edu). - - Valuable things to do: - Pipeline conflict warnings - We encode/decode "ld #_label, dp" differently in relocatable files - This means we're not compatible with TI output containing those - expressions. We store the upper nine bits; TI stores the lower nine - bits. How they recover the original upper nine bits is beyond me. - - Tests to add to expect testsuite: - '=' and '==' with .if, .elseif, and .break - - Incompatibilities (mostly trivial): - We don't allow ''' - We fill text section with zeroes instead of "nop"s - We don't convert '' or "" to a single instance - We don't convert '' to '\0' - We don't allow strings with .byte/.half/.short/.long - Probably details of the subsym stuff are different - TI sets labels to be data type 4 (T_INT); GAS uses T_NULL. - - COFF1 limits section names to 8 characters. - Some of the default behavior changed from COFF1 to COFF2. */ - -#include <stdlib.h> -#include <limits.h> -#include <errno.h> -#include "as.h" -#include "safe-ctype.h" -#include "sb.h" -#include "macro.h" -#include "subsegs.h" -#include "struc-symbol.h" -#include "opcode/tic54x.h" -#include "obj-coff.h" -#include <math.h> - - -static struct stag -{ - symbolS *sym; /* Symbol for this stag; value is offset. */ - const char *name; /* Shortcut to symbol name. */ - bfd_vma size; /* Size of struct/union. */ - int current_bitfield_offset; /* Temporary for tracking fields. */ - int is_union; - struct stag_field /* List of fields. */ - { - const char *name; - bfd_vma offset; /* Of start of this field. */ - int bitfield_offset; /* Of start of this field. */ - struct stag *stag; /* If field is struct/union. */ - struct stag_field *next; - } *field; - /* For nesting; used only in stag construction. */ - struct stag *inner; /* Enclosed .struct. */ - struct stag *outer; /* Enclosing .struct. */ -} *current_stag = NULL; - -#define MAX_LINE 256 /* Lines longer than this are truncated by TI's asm. */ - -typedef struct _tic54x_insn -{ - const template *tm; /* Opcode template. */ - - char mnemonic[MAX_LINE]; /* Opcode name/mnemonic. */ - char parmnemonic[MAX_LINE]; /* 2nd mnemonic of parallel insn. */ - - int opcount; - struct opstruct - { - char buf[MAX_LINE]; - enum optype type; - expressionS exp; - } operands[MAX_OPERANDS]; - - int paropcount; - struct opstruct paroperands[MAX_OPERANDS]; - - int is_lkaddr; - int lkoperand; - int words; /* Size of insn in 16-bit words. */ - int using_default_dst; /* Do we need to explicitly set an - omitted OP_DST operand? */ - struct - { - unsigned short word; /* Final encoded opcode data. */ - int unresolved; - int r_nchars; /* Relocation size. */ - bfd_reloc_code_real_type r_type; /* Relocation type. */ - expressionS addr_expr; /* Storage for unresolved expressions. */ - } opcode[3]; -} tic54x_insn; - -enum cpu_version -{ - VNONE = 0, V541 = 1, V542 = 2, V543 = 3, V545 = 5, V548 = 8, V549 = 9, - V545LP = 15, V546LP = 16 -}; - -enum address_mode -{ - c_mode, /* 16-bit addresses. */ - far_mode /* >16-bit addresses. */ -}; - -static segT stag_saved_seg; -static subsegT stag_saved_subseg; - -const char comment_chars[] = ";"; -const char line_comment_chars[] = ";*#"; /* At column zero only. */ -const char line_separator_chars[] = ""; /* Not permitted. */ - -int emitting_long = 0; - -/* Characters which indicate that this is a floating point constant. */ -const char FLT_CHARS[] = "fF"; - -/* Characters that can be used to separate mantissa from exp in FP - nums. */ -const char EXP_CHARS[] = "eE"; - -const char *md_shortopts = ""; - -#define OPTION_ADDRESS_MODE (OPTION_MD_BASE) -#define OPTION_CPU_VERSION (OPTION_ADDRESS_MODE + 1) -#define OPTION_COFF_VERSION (OPTION_CPU_VERSION + 1) -#define OPTION_STDERR_TO_FILE (OPTION_COFF_VERSION + 1) - -struct option md_longopts[] = -{ - { "mfar-mode", no_argument, NULL, OPTION_ADDRESS_MODE }, - { "mf", no_argument, NULL, OPTION_ADDRESS_MODE }, - { "mcpu", required_argument, NULL, OPTION_CPU_VERSION }, - { "merrors-to-file", required_argument, NULL, OPTION_STDERR_TO_FILE }, - { "me", required_argument, NULL, OPTION_STDERR_TO_FILE }, - { NULL, no_argument, NULL, 0}, -}; - -size_t md_longopts_size = sizeof (md_longopts); - -static int assembly_begun = 0; -/* Addressing mode is not entirely implemented; the latest rev of the Other - assembler doesn't seem to make any distinction whatsoever; all relocations - are stored as extended relocatiosn. Older versions used REL16 vs RELEXT16, - but now it seems all relocations are RELEXT16. We use all RELEXT16. - - The cpu version is kind of a waste of time as well. There is one - instruction (RND) for LP devices only, and several for devices with - extended addressing only. We include it for compatibility. */ -static enum address_mode amode = c_mode; -static enum cpu_version cpu = VNONE; - -/* Include string substitutions in listing? */ -static int listing_sslist = 0; - -/* Did we do subsym substitutions on the line? */ -static int substitution_line = 0; - -/* Last label seen. */ -static symbolS *last_label_seen = NULL; - -/* This ensures that all new labels are unique. */ -static int local_label_id; - -static struct hash_control *subsym_recurse_hash; /* Prevent infinite recurse. */ -static struct hash_control *math_hash; /* Built-in math functions. */ -/* Allow maximum levels of macro nesting; level 0 is the main substitution - symbol table. The other assembler only does 32 levels, so there! */ -static struct hash_control *subsym_hash[100]; - -/* Keep track of local labels so we can substitute them before GAS sees them - since macros use their own 'namespace' for local labels, use a separate hash - - We do our own local label handling 'cuz it's subtly different from the - stock GAS handling. - - We use our own macro nesting counter, since GAS overloads it when expanding - other things (like conditionals and repeat loops). */ -static int macro_level = 0; -static struct hash_control *local_label_hash[100]; -/* Keep track of struct/union tags. */ -static struct hash_control *stag_hash; -static struct hash_control *op_hash; -static struct hash_control *parop_hash; -static struct hash_control *reg_hash; -static struct hash_control *mmreg_hash; -static struct hash_control *cc_hash; -static struct hash_control *cc2_hash; -static struct hash_control *cc3_hash; -static struct hash_control *sbit_hash; -static struct hash_control *misc_symbol_hash; - -/* Only word (et al.), align, or conditionals are allowed within - .struct/.union. */ -#define ILLEGAL_WITHIN_STRUCT() \ - do \ - if (current_stag != NULL) \ - { \ - as_bad (_("pseudo-op illegal within .struct/.union")); \ - return; \ - } \ - while (0) - -static void tic54x_emit_char PARAMS ((char)); -static fragS * frag_prev PARAMS ((fragS *, segT)); -static fragS * bit_offset_frag PARAMS ((fragS *, segT)); -static int frag_bit_offset PARAMS ((fragS *, segT)); -static char * parse_expression PARAMS ((char *, expressionS *)); -static void tic54x_asg PARAMS ((int)); -static void tic54x_eval PARAMS ((int)); -static void tic54x_bss PARAMS ((int)); -static void stag_add_field_symbols PARAMS ((struct stag *, const char *, bfd_vma, symbolS *, const char *)); -static void stag_add_field PARAMS ((struct stag *, const char *, bfd_vma, struct stag *)); -static void tic54x_struct PARAMS ((int)); -static void tic54x_endstruct PARAMS ((int)); -static void tic54x_tag PARAMS ((int)); -static void tic54x_struct_field PARAMS ((int)); -static void tic54x_cons PARAMS ((int)); -static void tic54x_remove_local_label PARAMS ((const char *, PTR)); -static void tic54x_clear_local_labels PARAMS ((int)); -static void tic54x_sect PARAMS ((int)); -static void tic54x_space PARAMS ((int)); -static void tic54x_usect PARAMS ((int)); -static enum cpu_version lookup_version PARAMS ((const char *)); -static void set_cpu PARAMS ((enum cpu_version)); -static void tic54x_version PARAMS ((int)); -static void tic54x_float_cons PARAMS ((int)); -static void tic54x_stringer PARAMS ((int)); -static void tic54x_p2align PARAMS ((int)); -static void tic54x_align_words PARAMS ((int)); -static void tic54x_field PARAMS ((int)); -static int tic54x_initialized_section PARAMS ((segT)); -static void tic54x_clink PARAMS ((int)); -static void tic54x_set_default_include PARAMS ((int)); -static void tic54x_include PARAMS ((int)); -static void tic54x_message PARAMS ((int)); -static void tic54x_label PARAMS ((int)); -static void tic54x_mmregs PARAMS ((int)); -static void tic54x_loop PARAMS ((int)); -static void tic54x_endloop PARAMS ((int)); -static void tic54x_break PARAMS ((int)); -static void set_address_mode PARAMS ((int)); -static void tic54x_address_mode PARAMS ((int)); -static void tic54x_sblock PARAMS ((int)); -static void tic54x_set PARAMS ((int)); -static void tic54x_fclist PARAMS ((int)); -static void tic54x_sslist PARAMS ((int)); -static void tic54x_var PARAMS ((int)); -static void tic54x_mlib PARAMS ((int)); -static int subsym_symlen PARAMS ((char *, char *)); -static int subsym_symcmp PARAMS ((char *, char *)); -static int subsym_firstch PARAMS ((char *, char *)); -static int subsym_lastch PARAMS ((char *, char *)); -static int subsym_isdefed PARAMS ((char *, char *)); -static int subsym_ismember PARAMS ((char *, char *)); -static int subsym_iscons PARAMS ((char *, char *)); -static int subsym_isname PARAMS ((char *, char *)); -static int subsym_isreg PARAMS ((char *, char *)); -static int subsym_structsz PARAMS ((char *, char *)); -static int subsym_structacc PARAMS ((char *, char *)); -static float math_ceil PARAMS ((float, float)); -static float math_cvi PARAMS ((float, float)); -static float math_floor PARAMS ((float, float)); -static float math_fmod PARAMS ((float, float)); -static float math_int PARAMS ((float, float)); -static float math_round PARAMS ((float, float)); -static float math_sgn PARAMS ((float, float)); -static float math_trunc PARAMS ((float, float)); -static float math_acos PARAMS ((float, float)); -static float math_asin PARAMS ((float, float)); -static float math_atan PARAMS ((float, float)); -static float math_atan2 PARAMS ((float, float)); -static float math_cosh PARAMS ((float, float)); -static float math_cos PARAMS ((float, float)); -static float math_cvf PARAMS ((float, float)); -static float math_exp PARAMS ((float, float)); -static float math_fabs PARAMS ((float, float)); -static float math_ldexp PARAMS ((float, float)); -static float math_log10 PARAMS ((float, float)); -static float math_log PARAMS ((float, float)); -static float math_max PARAMS ((float, float)); -static float math_min PARAMS ((float, float)); -static float math_pow PARAMS ((float, float)); -static float math_sin PARAMS ((float, float)); -static float math_sinh PARAMS ((float, float)); -static float math_sqrt PARAMS ((float, float)); -static float math_tan PARAMS ((float, float)); -static float math_tanh PARAMS ((float, float)); -static int is_accumulator PARAMS ((struct opstruct *)); -static int get_operands PARAMS ((struct opstruct operands[], char *)); -static int is_immediate PARAMS ((struct opstruct *)); -static int is_absolute PARAMS ((struct opstruct *)); -static int is_indirect PARAMS ((struct opstruct *)); -static int is_dual PARAMS ((struct opstruct *)); -static int is_mmreg PARAMS ((struct opstruct *)); -static int is_type PARAMS ((struct opstruct *, enum optype)); -static int operands_match PARAMS ((tic54x_insn *, struct opstruct *, int, const enum optype *, int, int)); -static int encode_dmad PARAMS ((tic54x_insn *, struct opstruct *, int)); -static int encode_address PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_indirect PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_integer PARAMS ((tic54x_insn *, struct opstruct *, int, int, int, unsigned short)); -static int encode_condition PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_cc3 PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_arx PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_cc2 PARAMS ((tic54x_insn *, struct opstruct *)); -static int encode_operand PARAMS ((tic54x_insn *, enum optype, struct opstruct *)); -static void emit_insn PARAMS ((tic54x_insn *)); -static int build_insn PARAMS ((tic54x_insn *)); -static int optimize_insn PARAMS ((tic54x_insn *)); -static int tic54x_parse_insn PARAMS ((tic54x_insn *, char *)); -static int next_line_shows_parallel PARAMS ((char *)); -static int tic54x_parse_parallel_insn_firstline PARAMS ((tic54x_insn *, char *)); -static int tic54x_parse_parallel_insn_lastline PARAMS ((tic54x_insn *, char *)); -static char * subsym_get_arg PARAMS ((char *, char *, char **, int)); -static void subsym_create_or_replace PARAMS ((char *, char *)); -static char * subsym_lookup PARAMS ((char *, int)); -static char * subsym_substitute PARAMS ((char *, int)); - - -void -md_show_usage (stream) - FILE *stream; -{ - fprintf (stream, _("C54x-specific command line options:\n")); - fprintf (stream, _("-mfar-mode | -mf Use extended addressing\n")); - fprintf (stream, _("-mcpu=<CPU version> Specify the CPU version\n")); - fprintf (stream, _("-merrors-to-file <filename>\n")); - fprintf (stream, _("-me <filename> Redirect errors to a file\n")); -} - -/* Output a single character (upper octect is zero). */ - -static void -tic54x_emit_char (c) - char c; -{ - expressionS exp; - - exp.X_op = O_constant; - exp.X_add_number = c; - emit_expr (&exp, 2); -} - -/* Walk backwards in the frag chain. */ - -static fragS * -frag_prev (frag, seg) - fragS *frag; - segT seg; -{ - segment_info_type *seginfo = seg_info (seg); - fragS *fragp; - - for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) - if (fragp->fr_next == frag) - return fragp; - - return NULL; -} - -static fragS * -bit_offset_frag (frag, seg) - fragS *frag; - segT seg; -{ - while (frag != NULL) - { - if (frag->fr_fix == 0 - && frag->fr_opcode == NULL - && frag->tc_frag_data == 0) - frag = frag_prev (frag, seg); - else - return frag; - } - return NULL; -} - -/* Return the number of bits allocated in the most recent word, or zero if - none. .field/.space/.bes may leave words partially allocated. */ - -static int -frag_bit_offset (frag, seg) - fragS *frag; - segT seg; -{ - frag = bit_offset_frag (frag, seg); - - if (frag) - return frag->fr_opcode != NULL ? -1 : frag->tc_frag_data; - - return 0; -} - -/* Read an expression from a C string; returns a pointer past the end of the - expression. */ - -static char * -parse_expression (str, exp) - char *str; - expressionS * exp; -{ - char *s; - char *tmp; - - tmp = input_line_pointer; /* Save line pointer. */ - input_line_pointer = str; - expression (exp); - s = input_line_pointer; - input_line_pointer = tmp; /* Restore line pointer. */ - return s; /* Return pointer to where parsing stopped. */ -} - -/* .asg "character-string"|character-string, symbol - - .eval is the only pseudo-op allowed to perform arithmetic on substitution - symbols. all other use of symbols defined with .asg are currently - unsupported. */ - -static void -tic54x_asg (x) - int x ATTRIBUTE_UNUSED; -{ - int c; - char *name; - char *str; - char *tmp; - int quoted = *input_line_pointer == '"'; - - ILLEGAL_WITHIN_STRUCT (); - - if (quoted) - { - int len; - str = demand_copy_C_string (&len); - c = *input_line_pointer; - } - else - { - str = input_line_pointer; - while ((c = *input_line_pointer) != ',') - { - if (is_end_of_line[(int) *input_line_pointer]) - break; - ++input_line_pointer; - } - *input_line_pointer = 0; - } - if (c != ',') - { - as_bad (_("Comma and symbol expected for '.asg STRING, SYMBOL'")); - ignore_rest_of_line (); - return; - } - - name = ++input_line_pointer; - c = get_symbol_end (); /* Get terminator. */ - if (!ISALPHA (*name)) - { - as_bad ("symbols assigned with .asg must begin with a letter"); - ignore_rest_of_line (); - return; - } - - tmp = xmalloc (strlen (str) + 1); - strcpy (tmp, str); - str = tmp; - tmp = xmalloc (strlen (name) + 1); - strcpy (tmp, name); - name = tmp; - subsym_create_or_replace (name, str); - *input_line_pointer = c; - demand_empty_rest_of_line (); -} - -/* .eval expression, symbol - There's something screwy about this. The other assembler sometimes does and - sometimes doesn't substitute symbols defined with .eval. - We'll put the symbols into the subsym table as well as the normal symbol - table, since that's what works best. */ - -static void -tic54x_eval (x) - int x ATTRIBUTE_UNUSED; -{ - char c; - int value; - char *name; - symbolS *symbolP; - char valuestr[32], *tmp; - int quoted; - - ILLEGAL_WITHIN_STRUCT (); - - SKIP_WHITESPACE (); - - quoted = *input_line_pointer == '"'; - if (quoted) - ++input_line_pointer; - value = get_absolute_expression (); - if (quoted) - { - if (*input_line_pointer != '"') - { - as_bad (_("Unterminated string after absolute expression")); - ignore_rest_of_line (); - return; - } - ++input_line_pointer; - } - if (*input_line_pointer++ != ',') - { - as_bad (_("Comma and symbol expected for '.eval EXPR, SYMBOL'")); - ignore_rest_of_line (); - return; - } - name = input_line_pointer; - c = get_symbol_end (); /* Get terminator. */ - tmp = xmalloc (strlen (name) + 1); - name = strcpy (tmp, name); - *input_line_pointer = c; - - if (!ISALPHA (*name)) - { - as_bad (_("symbols assigned with .eval must begin with a letter")); - ignore_rest_of_line (); - return; - } - symbolP = symbol_new (name, absolute_section, - (valueT) value, &zero_address_frag); - SF_SET_LOCAL (symbolP); - symbol_table_insert (symbolP); - - /* The "other" assembler sometimes doesn't put .eval's in the subsym table - But since there's not written rule as to when, don't even bother trying - to match their behavior. */ - sprintf (valuestr, "%d", value); - tmp = xmalloc (strlen (valuestr) + 1); - strcpy (tmp, valuestr); - subsym_create_or_replace (name, tmp); - - demand_empty_rest_of_line (); -} - -/* .bss symbol, size [, [blocking flag] [, alignment flag] - - alignment is to a longword boundary; blocking is to 128-word boundary. - - 1) if there is a hole in memory, this directive should attempt to fill it - (not yet implemented). - - 2) if the blocking flag is not set, allocate at the current SPC - otherwise, check to see if the current SPC plus the space to be - allocated crosses the page boundary (128 words). - if there's not enough space, create a hole and align with the next page - boundary. - (not yet implemented). */ - -static void -tic54x_bss (x) - int x ATTRIBUTE_UNUSED; -{ - char c; - char *name; - char *p; - int words; - segT current_seg; - subsegT current_subseg; - symbolS *symbolP; - int block = 0; - int align = 0; - - ILLEGAL_WITHIN_STRUCT (); - - current_seg = now_seg; /* Save current seg. */ - current_subseg = now_subseg; /* Save current subseg. */ - - name = input_line_pointer; - c = get_symbol_end (); /* Get terminator. */ - if (c != ',') - { - as_bad (".bss size argument missing\n"); - ignore_rest_of_line (); - return; - } - - ++input_line_pointer; - words = get_absolute_expression (); - if (words < 0) - { - as_bad (".bss size %d < 0!", words); - ignore_rest_of_line (); - return; - } - - if (*input_line_pointer == ',') - { - /* The blocking flag may be missing. */ - ++input_line_pointer; - if (*input_line_pointer != ',') - block = get_absolute_expression (); - else - block = 0; - - if (*input_line_pointer == ',') - { - ++input_line_pointer; - align = get_absolute_expression (); - } - else - align = 0; - } - else - block = align = 0; - - subseg_set (bss_section, 0); - symbolP = symbol_find_or_make (name); - - if (S_GET_SEGMENT (symbolP) == bss_section) - symbolP->sy_frag->fr_symbol = (symbolS *) NULL; - - symbol_set_frag (symbolP, frag_now); - p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, - (offsetT) (words * OCTETS_PER_BYTE), (char *) 0); - *p = 0; /* Fill char. */ - - S_SET_SEGMENT (symbolP, bss_section); - - /* The symbol may already have been created with a preceding - ".globl" directive -- be careful not to step on storage class - in that case. Otherwise, set it to static. */ - if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) - S_SET_STORAGE_CLASS (symbolP, C_STAT); - - if (align) - { - /* s_align eats end of line; restore it */ - s_align_bytes (4); - --input_line_pointer; - } - - if (block) - bss_section->flags |= SEC_TIC54X_BLOCK; - - subseg_set (current_seg, current_subseg); /* Restore current seg. */ - demand_empty_rest_of_line (); -} - -static void -stag_add_field_symbols (stag, path, base_offset, rootsym, root_stag_name) - struct stag *stag; - const char *path; - bfd_vma base_offset; - symbolS *rootsym; - const char *root_stag_name; -{ - char prefix[strlen (path) + 2]; - struct stag_field *field = stag->field; - - /* Construct a symbol for every field contained within this structure - including fields within structure fields. */ - strcpy (prefix, path); - if (*path) - strcat (prefix, "."); - - while (field != NULL) - { - int len = strlen (prefix) + strlen (field->name) + 2; - char *name = xmalloc (len); - strcpy (name, prefix); - strcat (name, field->name); - - if (rootsym == NULL) - { - symbolS *sym; - sym = symbol_new (name, absolute_section, - (field->stag ? field->offset : - (valueT) (base_offset + field->offset)), - &zero_address_frag); - SF_SET_LOCAL (sym); - symbol_table_insert (sym); - } - else - { - char *replacement = xmalloc (strlen (name) - + strlen (stag->name) + 2); - strcpy (replacement, S_GET_NAME (rootsym)); - strcat (replacement, "+"); - strcat (replacement, root_stag_name); - strcat (replacement, name + strlen (S_GET_NAME (rootsym))); - hash_insert (subsym_hash[0], name, replacement); - } - - /* Recurse if the field is a structure. - Note the field offset is relative to the outermost struct. */ - if (field->stag != NULL) - stag_add_field_symbols (field->stag, name, - field->offset, - rootsym, root_stag_name); - field = field->next; - } -} - -/* Keep track of stag fields so that when structures are nested we can add the - complete dereferencing symbols to the symbol table. */ - -static void -stag_add_field (parent, name, offset, stag) - struct stag *parent; - const char *name; - bfd_vma offset; - struct stag *stag; -{ - struct stag_field *sfield = xmalloc (sizeof (struct stag_field)); - - memset (sfield, 0, sizeof (*sfield)); - sfield->name = strcpy (xmalloc (strlen (name) + 1), name); - sfield->offset = offset; - sfield->bitfield_offset = parent->current_bitfield_offset; - sfield->stag = stag; - if (parent->field == NULL) - parent->field = sfield; - else - { - struct stag_field *sf = parent->field; - while (sf->next != NULL) - sf = sf->next; - sf->next = sfield; - } - /* Only create a symbol for this field if the parent has no name. */ - if (!strncmp (".fake", parent->name, 5)) - { - symbolS *sym = symbol_new (name, absolute_section, - (valueT) offset, &zero_address_frag); - SF_SET_LOCAL (sym); - symbol_table_insert (sym); - } -} - -/* [STAG] .struct [OFFSET] - Start defining structure offsets (symbols in absolute section). */ - -static void -tic54x_struct (arg) - int arg; -{ - int start_offset = 0; - int is_union = arg; - - if (!current_stag) - { - /* Starting a new struct, switch to absolute section. */ - stag_saved_seg = now_seg; - stag_saved_subseg = now_subseg; - subseg_set (absolute_section, 0); - } - /* Align the current pointer. */ - else if (current_stag->current_bitfield_offset != 0) - { - ++abs_section_offset; - current_stag->current_bitfield_offset = 0; - } - - /* Offset expression is only meaningful for global .structs. */ - if (!is_union) - { - /* Offset is ignored in inner structs. */ - SKIP_WHITESPACE (); - if (!is_end_of_line[(int) *input_line_pointer]) - start_offset = get_absolute_expression (); - else - start_offset = 0; - } - - if (current_stag) - { - /* Nesting, link to outer one. */ - current_stag->inner = (struct stag *) xmalloc (sizeof (struct stag)); - memset (current_stag->inner, 0, sizeof (struct stag)); - current_stag->inner->outer = current_stag; - current_stag = current_stag->inner; - if (start_offset) - as_warn (_("Offset on nested structures is ignored")); - start_offset = abs_section_offset; - } - else - { - current_stag = (struct stag *) xmalloc (sizeof (struct stag)); - memset (current_stag, 0, sizeof (struct stag)); - abs_section_offset = start_offset; - } - current_stag->is_union = is_union; - - if (line_label == NULL) - { - static int struct_count = 0; - char fake[] = ".fake_stagNNNNNNN"; - sprintf (fake, ".fake_stag%d", struct_count++); - current_stag->sym = symbol_new (fake, absolute_section, - (valueT) abs_section_offset, - &zero_address_frag); - } - else - { - char label[strlen (S_GET_NAME (line_label)) + 1]; - strcpy (label, S_GET_NAME (line_label)); - current_stag->sym = symbol_new (label, absolute_section, - (valueT) abs_section_offset, - &zero_address_frag); - } - current_stag->name = S_GET_NAME (current_stag->sym); - SF_SET_LOCAL (current_stag->sym); - /* Nested .structs don't go into the symbol table. */ - if (current_stag->outer == NULL) - symbol_table_insert (current_stag->sym); - - line_label = NULL; -} - -/* [LABEL] .endstruct - finish defining structure offsets; optional LABEL's value will be the size - of the structure. */ - -static void -tic54x_endstruct (is_union) - int is_union; -{ - int size; - const char *path = - !strncmp (current_stag->name, ".fake", 5) ? "" : current_stag->name; - - if (!current_stag || current_stag->is_union != is_union) - { - as_bad (_(".end%s without preceding .%s"), - is_union ? "union" : "struct", - is_union ? "union" : "struct"); - ignore_rest_of_line (); - return; - } - - /* Align end of structures. */ - if (current_stag->current_bitfield_offset) - { - ++abs_section_offset; - current_stag->current_bitfield_offset = 0; - } - - if (current_stag->is_union) - size = current_stag->size; - else - size = abs_section_offset - S_GET_VALUE (current_stag->sym); - if (line_label != NULL) - { - S_SET_VALUE (line_label, size); - symbol_table_insert (line_label); - line_label = NULL; - } - - /* Union size has already been calculated. */ - if (!current_stag->is_union) - current_stag->size = size; - /* Nested .structs don't get put in the stag table. */ - if (current_stag->outer == NULL) - { - hash_insert (stag_hash, current_stag->name, current_stag); - stag_add_field_symbols (current_stag, path, - S_GET_VALUE (current_stag->sym), - NULL, NULL); - } - current_stag = current_stag->outer; - - /* If this is a nested .struct/.union, add it as a field to the enclosing - one. otherwise, restore the section we were in. */ - if (current_stag != NULL) - { - stag_add_field (current_stag, current_stag->inner->name, - S_GET_VALUE (current_stag->inner->sym), - current_stag->inner); - } - else - subseg_set (stag_saved_seg, stag_saved_subseg); -} - -/* [LABEL] .tag STAG - Reference a structure within a structure, as a sized field with an optional - label. - If used outside of a .struct/.endstruct, overlays the given structure - format on the existing allocated space. */ - -static void -tic54x_tag (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - char *name = input_line_pointer; - int c = get_symbol_end (); - struct stag *stag = (struct stag *) hash_find (stag_hash, name); - - if (!stag) - { - if (*name) - as_bad (_("Unrecognized struct/union tag '%s'"), name); - else - as_bad (_(".tag requires a structure tag")); - ignore_rest_of_line (); - return; - } - if (line_label == NULL) - { - as_bad (_("Label required for .tag")); - ignore_rest_of_line (); - return; - } - else - { - char label[strlen (S_GET_NAME (line_label)) + 1]; - - strcpy (label, S_GET_NAME (line_label)); - if (current_stag != NULL) - stag_add_field (current_stag, label, - abs_section_offset - S_GET_VALUE (current_stag->sym), - stag); - else - { - symbolS *sym = symbol_find (label); - - if (!sym) - { - as_bad (_(".tag target '%s' undefined"), label); - ignore_rest_of_line (); - return; - } - stag_add_field_symbols (stag, S_GET_NAME (sym), - S_GET_VALUE (stag->sym), sym, stag->name); - } - } - - /* Bump by the struct size, but only if we're within a .struct section. */ - if (current_stag != NULL && !current_stag->is_union) - abs_section_offset += stag->size; - - *input_line_pointer = c; - demand_empty_rest_of_line (); - line_label = NULL; -} - -/* Handle all .byte, .char, .double, .field, .float, .half, .int, .long, - .short, .string, .ubyte, .uchar, .uhalf, .uint, .ulong, .ushort, .uword, - and .word. */ - -static void -tic54x_struct_field (type) - int type; -{ - int size; - int count = 1; - int new_bitfield_offset = 0; - int field_align = current_stag->current_bitfield_offset != 0; - int longword_align = 0; - - SKIP_WHITESPACE (); - if (!is_end_of_line[(int) *input_line_pointer]) - count = get_absolute_expression (); - - switch (type) - { - case 'b': - case 'B': - case 'c': - case 'C': - case 'h': - case 'H': - case 'i': - case 'I': - case 's': - case 'S': - case 'w': - case 'W': - case '*': /* String. */ - size = 1; - break; - case 'f': - case 'l': - case 'L': - longword_align = 1; - size = 2; - break; - case '.': /* Bitfield. */ - size = 0; - if (count < 1 || count > 32) - { - as_bad (_(".field count '%d' out of range (1 <= X <= 32)"), count); - ignore_rest_of_line (); - return; - } - if (current_stag->current_bitfield_offset + count > 16) - { - /* Set the appropriate size and new field offset. */ - if (count == 32) - { - size = 2; - count = 1; - } - else if (count > 16) - { - size = 1; - count = 1; - new_bitfield_offset = count - 16; - } - else - new_bitfield_offset = count; - } - else - { - field_align = 0; - new_bitfield_offset = current_stag->current_bitfield_offset + count; - } - break; - default: - as_bad (_("Unrecognized field type '%c'"), type); - ignore_rest_of_line (); - return; - } - - if (field_align) - { - /* Align to the actual starting position of the field. */ - current_stag->current_bitfield_offset = 0; - ++abs_section_offset; - } - /* Align to longword boundary. */ - if (longword_align && (abs_section_offset & 0x1)) - ++abs_section_offset; - - if (line_label == NULL) - { - static int fieldno = 0; - char fake[] = ".fake_fieldNNNNN"; - - sprintf (fake, ".fake_field%d", fieldno++); - stag_add_field (current_stag, fake, - abs_section_offset - S_GET_VALUE (current_stag->sym), - NULL); - } - else - { - char label[strlen (S_GET_NAME (line_label) + 1)]; - - strcpy (label, S_GET_NAME (line_label)); - stag_add_field (current_stag, label, - abs_section_offset - S_GET_VALUE (current_stag->sym), - NULL); - } - - if (current_stag->is_union) - { - /* Note we treat the element as if it were an array of COUNT. */ - if (current_stag->size < (unsigned) size * count) - current_stag->size = size * count; - } - else - { - abs_section_offset += (unsigned) size * count; - current_stag->current_bitfield_offset = new_bitfield_offset; - } - line_label = NULL; -} - -/* Handle .byte, .word. .int, .long and all variants. */ - -static void -tic54x_cons (type) - int type; -{ - unsigned int c; - int octets; - - /* If we're within a .struct construct, don't actually allocate space. */ - if (current_stag != NULL) - { - tic54x_struct_field (type); - return; - } - -#ifdef md_flush_pending_output - md_flush_pending_output (); -#endif - - generate_lineno_debug (); - - /* Align long words to long word boundaries (4 octets). */ - if (type == 'l' || type == 'L') - { - frag_align (2, 0, 2); - /* If there's a label, assign it to the first allocated word. */ - if (line_label != NULL) - { - symbol_set_frag (line_label, frag_now); - S_SET_VALUE (line_label, frag_now_fix ()); - } - } - - switch (type) - { - case 'l': - case 'L': - case 'x': - octets = 4; - break; - case 'b': - case 'B': - case 'c': - case 'C': - octets = 1; - break; - default: - octets = 2; - break; - } - - do - { - if (*input_line_pointer == '"') - { - input_line_pointer++; - while (is_a_char (c = next_char_of_string ())) - tic54x_emit_char (c); - know (input_line_pointer[-1] == '\"'); - } - else - { - expressionS exp; - - input_line_pointer = parse_expression (input_line_pointer, &exp); - if (exp.X_op == O_constant) - { - offsetT value = exp.X_add_number; - /* Truncate overflows. */ - switch (octets) - { - case 1: - if ((value > 0 && value > 0xFF) - || (value < 0 && value < - 0x100)) - as_warn ("Overflow in expression, truncated to 8 bits"); - break; - case 2: - if ((value > 0 && value > 0xFFFF) - || (value < 0 && value < - 0x10000)) - as_warn ("Overflow in expression, truncated to 16 bits"); - break; - } - } - if (exp.X_op != O_constant && octets < 2) - { - /* Disallow .byte with a non constant expression that will - require relocation. */ - as_bad (_("Relocatable values require at least WORD storage")); - ignore_rest_of_line (); - return; - } - - if (exp.X_op != O_constant - && amode == c_mode - && octets == 4) - { - /* FIXME -- at one point TI tools used to output REL16 - relocations, but I don't think the latest tools do at all - The current tools output extended relocations regardless of - the addressing mode (I actually think that ".c_mode" is - totally ignored in the latest tools). */ - amode = far_mode; - emitting_long = 1; - emit_expr (&exp, 4); - emitting_long = 0; - amode = c_mode; - } - else - { - emitting_long = octets == 4; - emit_expr (&exp, (octets == 1) ? 2 : octets); - emitting_long = 0; - } - } - } - while (*input_line_pointer++ == ','); - - input_line_pointer--; /* Put terminator back into stream. */ - demand_empty_rest_of_line (); -} - -/* .global <symbol>[,...,<symbolN>] - .def <symbol>[,...,<symbolN>] - .ref <symbol>[,...,<symbolN>] - - These all identify global symbols. - - .def means the symbol is defined in the current module and can be accessed - by other files. The symbol should be placed in the symbol table. - - .ref means the symbol is used in the current module but defined in another - module. The linker is to resolve this symbol's definition at link time. - - .global should act as a .ref or .def, as needed. - - global, def and ref all have symbol storage classes of C_EXT. - - I can't identify any difference in how the "other" c54x assembler treats - these, so we ignore the type here. */ - -void -tic54x_global (type) - int type; -{ - char *name; - int c; - symbolS *symbolP; - - if (type == 'r') - as_warn (_("Use of .def/.ref is deprecated. Use .global instead")); - - ILLEGAL_WITHIN_STRUCT (); - - do - { - name = input_line_pointer; - c = get_symbol_end (); - symbolP = symbol_find_or_make (name); - - *input_line_pointer = c; - S_SET_STORAGE_CLASS (symbolP, C_EXT); - if (c == ',') - { - input_line_pointer++; - if (is_end_of_line[(int) *input_line_pointer]) - c = *input_line_pointer; - } - } - while (c == ','); - - demand_empty_rest_of_line (); -} - -/* Remove the symbol from the local label hash lookup. */ - -static void -tic54x_remove_local_label (key, value) - const char *key; - PTR value ATTRIBUTE_UNUSED; -{ - PTR *elem = hash_delete (local_label_hash[macro_level], key); - free (elem); -} - -/* Reset all local labels. */ - -static void -tic54x_clear_local_labels (ignored) - int ignored ATTRIBUTE_UNUSED; -{ - hash_traverse (local_label_hash[macro_level], tic54x_remove_local_label); -} - -/* .text - .data - .sect "section name" - - Initialized section - make sure local labels get cleared when changing sections - - ARG is 't' for text, 'd' for data, or '*' for a named section - - For compatibility, '*' sections are SEC_CODE if instructions are - encountered, or SEC_DATA if not. -*/ - -static void -tic54x_sect (arg) - int arg; -{ - ILLEGAL_WITHIN_STRUCT (); - - /* Local labels are cleared when changing sections. */ - tic54x_clear_local_labels (0); - - if (arg == 't') - s_text (0); - else if (arg == 'd') - s_data (0); - else - { - char *name = NULL; - int len; - - /* If there are quotes, remove them. */ - if (*input_line_pointer == '"') - { - name = demand_copy_C_string (&len); - demand_empty_rest_of_line (); - name = strcpy (xmalloc (len + 10), name); - } - else - { - int c; - name = input_line_pointer; - c = get_symbol_end (); - len = strlen(name); - name = strcpy (xmalloc (len + 10), name); - *input_line_pointer = c; - demand_empty_rest_of_line (); - } - /* Make sure all named initialized sections flagged properly. If we - encounter instructions, we'll flag it with SEC_CODE as well. */ - strcat (name, ",\"w\"\n"); - input_scrub_insert_line (name); - obj_coff_section (0); - - /* If there was a line label, make sure that it gets assigned the proper - section. This is for compatibility, even though the actual behavior - is not explicitly defined. For consistency, we make .sect behave - like .usect, since that is probably what people expect. */ - if (line_label != NULL) - { - S_SET_SEGMENT (line_label, now_seg); - symbol_set_frag (line_label, frag_now); - S_SET_VALUE (line_label, frag_now_fix ()); - if (S_GET_STORAGE_CLASS (line_label) != C_EXT) - S_SET_STORAGE_CLASS (line_label, C_LABEL); - } - } -} - -/* [symbol] .space space_in_bits - [symbol] .bes space_in_bits - BES puts the symbol at the *last* word allocated - - cribbed from s_space. */ - -static void -tic54x_space (arg) - int arg; -{ - expressionS exp; - char *p = 0; - int octets = 0; - long words; - int bits_per_byte = (OCTETS_PER_BYTE * 8); - int bit_offset = 0; - symbolS *label = line_label; - int bes = arg; - - ILLEGAL_WITHIN_STRUCT (); - -#ifdef md_flush_pending_output - md_flush_pending_output (); -#endif - - /* Read the bit count. */ - expression (&exp); - - /* Some expressions are unresolvable until later in the assembly pass; - postpone until relaxation/fixup. we also have to postpone if a previous - partial allocation has not been completed yet. */ - if (exp.X_op != O_constant || frag_bit_offset (frag_now, now_seg) == -1) - { - struct bit_info *bi = xmalloc (sizeof (struct bit_info)); - char *p; - - bi->seg = now_seg; - bi->type = bes; - bi->sym = label; - p = frag_var (rs_machine_dependent, - 65536 * 2, 1, (relax_substateT) 0, - make_expr_symbol (&exp), (offsetT) 0, - (char *) bi); - if (p) - *p = 0; - - return; - } - - /* Reduce the required size by any bit offsets currently left over - from a previous .space/.bes/.field directive. */ - bit_offset = frag_now->tc_frag_data; - if (bit_offset != 0 && bit_offset < 16) - { - int spare_bits = bits_per_byte - bit_offset; - - if (spare_bits >= exp.X_add_number) - { - /* Don't have to do anything; sufficient bits have already been - allocated; just point the label to the right place. */ - if (label != NULL) - { - symbol_set_frag (label, frag_now); - S_SET_VALUE (label, frag_now_fix () - 1); - label = NULL; - } - frag_now->tc_frag_data += exp.X_add_number; - goto getout; - } - exp.X_add_number -= spare_bits; - /* Set the label to point to the first word allocated, which in this - case is the previous word, which was only partially filled. */ - if (!bes && label != NULL) - { - symbol_set_frag (label, frag_now); - S_SET_VALUE (label, frag_now_fix () - 1); - label = NULL; - } - } - /* Convert bits to bytes/words and octets, rounding up. */ - words = ((exp.X_add_number + bits_per_byte - 1) / bits_per_byte); - /* How many do we have left over? */ - bit_offset = exp.X_add_number % bits_per_byte; - octets = words * OCTETS_PER_BYTE; - if (octets < 0) - { - as_warn (_(".space/.bes repeat count is negative, ignored")); - goto getout; - } - else if (octets == 0) - { - as_warn (_(".space/.bes repeat count is zero, ignored")); - goto getout; - } - - /* If we are in the absolute section, just bump the offset. */ - if (now_seg == absolute_section) - { - abs_section_offset += words; - if (bes && label != NULL) - S_SET_VALUE (label, abs_section_offset - 1); - frag_now->tc_frag_data = bit_offset; - goto getout; - } - - if (!need_pass_2) - p = frag_var (rs_fill, 1, 1, - (relax_substateT) 0, (symbolS *) 0, - (offsetT) octets, (char *) 0); - - /* Make note of how many bits of this word we've allocated so far. */ - frag_now->tc_frag_data = bit_offset; - - /* .bes puts label at *last* word allocated. */ - if (bes && label != NULL) - { - symbol_set_frag (label, frag_now); - S_SET_VALUE (label, frag_now_fix () - 1); - } - - if (p) - *p = 0; - - getout: - - demand_empty_rest_of_line (); -} - -/* [symbol] .usect "section-name", size-in-words - [, [blocking-flag] [, alignment-flag]] - - Uninitialized section. - Non-zero blocking means that if the section would cross a page (128-word) - boundary, it will be page-aligned. - Non-zero alignment aligns on a longword boundary. - - Has no effect on the current section. */ - -static void -tic54x_usect (x) - int x ATTRIBUTE_UNUSED; -{ - char c; - char *name; - char *section_name; - char *p; - segT seg; - int size, blocking_flag, alignment_flag; - segT current_seg; - subsegT current_subseg; - flagword flags; - - ILLEGAL_WITHIN_STRUCT (); - - current_seg = now_seg; /* Save current seg. */ - current_subseg = now_subseg; /* Save current subseg. */ - - if (*input_line_pointer == '"') - input_line_pointer++; - section_name = input_line_pointer; - c = get_symbol_end (); /* Get terminator. */ - input_line_pointer++; /* Skip null symbol terminator. */ - name = xmalloc (input_line_pointer - section_name + 1); - strcpy (name, section_name); - - if (*input_line_pointer == ',') - ++input_line_pointer; - else if (c != ',') - { - as_bad (_("Missing size argument")); - ignore_rest_of_line (); - return; - } - - size = get_absolute_expression (); - - /* Read a possibly present third argument (blocking flag). */ - if (*input_line_pointer == ',') - { - ++input_line_pointer; - if (*input_line_pointer != ',') - blocking_flag = get_absolute_expression (); - else - blocking_flag = 0; - - /* Read a possibly present fourth argument (alignment flag). */ - if (*input_line_pointer == ',') - { - ++input_line_pointer; - alignment_flag = get_absolute_expression (); - } - else - alignment_flag = 0; - } - else - blocking_flag = alignment_flag = 0; - - seg = subseg_new (name, 0); - flags = bfd_get_section_flags (stdoutput, seg) | SEC_ALLOC; - - if (alignment_flag) - { - /* s_align eats end of line; restore it. */ - s_align_bytes (4); - --input_line_pointer; - } - - if (line_label != NULL) - { - S_SET_SEGMENT (line_label, seg); - symbol_set_frag (line_label, frag_now); - S_SET_VALUE (line_label, frag_now_fix ()); - /* Set scl to label, since that's what TI does. */ - if (S_GET_STORAGE_CLASS (line_label) != C_EXT) - S_SET_STORAGE_CLASS (line_label, C_LABEL); - } - - seg_info (seg)->bss = 1; /* Uninitialized data. */ - - p = frag_var (rs_fill, 1, 1, - (relax_substateT) 0, (symbolS *) line_label, - size * OCTETS_PER_BYTE, (char *) 0); - *p = 0; - - if (blocking_flag) - flags |= SEC_TIC54X_BLOCK; - - if (!bfd_set_section_flags (stdoutput, seg, flags)) - as_warn ("Error setting flags for \"%s\": %s", name, - bfd_errmsg (bfd_get_error ())); - - subseg_set (current_seg, current_subseg); /* Restore current seg. */ - demand_empty_rest_of_line (); -} - -static enum cpu_version -lookup_version (ver) - const char *ver; -{ - enum cpu_version version = VNONE; - - if (ver[0] == '5' && ver[1] == '4') - { - if (strlen (ver) == 3 - && (ver[2] == '1' || ver[2] == '2' || ver[2] == '3' - || ver[2] == '5' || ver[2] == '8' || ver[2] == '9')) - version = ver[2] - '0'; - else if (strlen (ver) == 5 - && TOUPPER (ver[3]) == 'L' - && TOUPPER (ver[4]) == 'P' - && (ver[2] == '5' || ver[2] == '6')) - version = ver[2] - '0' + 10; - } - - return version; -} - -static void -set_cpu (version) - enum cpu_version version; -{ - cpu = version; - if (version == V545LP || version == V546LP) - { - symbolS *symbolP = symbol_new ("__allow_lp", absolute_section, - (valueT) 1, &zero_address_frag); - SF_SET_LOCAL (symbolP); - symbol_table_insert (symbolP); - } -} - -/* .version cpu-version - cpu-version may be one of the following: - 541 - 542 - 543 - 545 - 545LP - 546LP - 548 - 549 - - This is for compatibility only. It currently has no affect on assembly. */ -static int cpu_needs_set = 1; - -static void -tic54x_version (x) - int x ATTRIBUTE_UNUSED; -{ - enum cpu_version version = VNONE; - enum cpu_version old_version = cpu; - int c; - char *ver; - - ILLEGAL_WITHIN_STRUCT (); - - SKIP_WHITESPACE (); - ver = input_line_pointer; - while (!is_end_of_line[(int) *input_line_pointer]) - ++input_line_pointer; - c = *input_line_pointer; - *input_line_pointer = 0; - - version = lookup_version (ver); - - if (cpu != VNONE && cpu != version) - as_warn (_("CPU version has already been set")); - - if (version == VNONE) - { - as_bad (_("Unrecognized version '%s'"), ver); - ignore_rest_of_line (); - return; - } - else if (assembly_begun && version != old_version) - { - as_bad (_("Changing of CPU version on the fly not supported")); - ignore_rest_of_line (); - return; - } - - set_cpu (version); - - *input_line_pointer = c; - demand_empty_rest_of_line (); -} - -/* 'f' = float, 'x' = xfloat, 'd' = double, 'l' = ldouble. */ - -static void -tic54x_float_cons (type) - int type; -{ - if (current_stag != 0) - tic54x_struct_field ('f'); - -#ifdef md_flush_pending_output - md_flush_pending_output (); -#endif - - /* Align to long word boundary (4 octets) unless it's ".xfloat". */ - if (type != 'x') - { - frag_align (2, 0, 2); - /* If there's a label, assign it to the first allocated word. */ - if (line_label != NULL) - { - symbol_set_frag (line_label, frag_now); - S_SET_VALUE (line_label, frag_now_fix ()); - } - } - - float_cons ('f'); -} - -/* The argument is capitalized if it should be zero-terminated - 's' is normal string with upper 8-bits zero-filled, 'p' is packed. - Code copied from stringer, and slightly modified so that strings are packed - and encoded into the correct octets. */ - -static void -tic54x_stringer (type) - int type; -{ - unsigned int c; - char *start; - int append_zero = type == 'S' || type == 'P'; - int packed = type == 'p' || type == 'P'; - int last_char = -1; /* Packed strings need two bytes at a time to encode. */ - - if (current_stag != NULL) - { - tic54x_struct_field ('*'); - return; - } - -#ifdef md_flush_pending_output - md_flush_pending_output (); -#endif - - c = ','; /* Do loop. */ - while (c == ',') - { - SKIP_WHITESPACE (); - switch (*input_line_pointer) - { - default: - { - unsigned short value = get_absolute_expression (); - FRAG_APPEND_1_CHAR ( value & 0xFF); - FRAG_APPEND_1_CHAR ((value >> 8) & 0xFF); - break; - } - case '\"': - ++input_line_pointer; /* -> 1st char of string. */ - start = input_line_pointer; - while (is_a_char (c = next_char_of_string ())) - { - if (!packed) - { - FRAG_APPEND_1_CHAR (c); - FRAG_APPEND_1_CHAR (0); - } - else - { - /* Packed strings are filled MS octet first. */ - if (last_char == -1) - last_char = c; - else - { - FRAG_APPEND_1_CHAR (c); - FRAG_APPEND_1_CHAR (last_char); - last_char = -1; - } - } - } - if (append_zero) - { - if (packed && last_char != -1) - { - FRAG_APPEND_1_CHAR (0); - FRAG_APPEND_1_CHAR (last_char); - last_char = -1; - } - else - { - FRAG_APPEND_1_CHAR (0); - FRAG_APPEND_1_CHAR (0); - } - } - know (input_line_pointer[-1] == '\"'); - break; - } - SKIP_WHITESPACE (); - c = *input_line_pointer; - if (!is_end_of_line[c]) - ++input_line_pointer; - } - - /* Finish up any leftover packed string. */ - if (packed && last_char != -1) - { - FRAG_APPEND_1_CHAR (0); - FRAG_APPEND_1_CHAR (last_char); - } - demand_empty_rest_of_line (); -} - -static void -tic54x_p2align (arg) - int arg ATTRIBUTE_UNUSED; -{ - as_bad (_("p2align not supported on this target")); -} - -static void -tic54x_align_words (arg) - int arg; -{ - /* Only ".align" with no argument is allowed within .struct/.union. */ - int count = arg; - - if (!is_end_of_line[(int) *input_line_pointer]) - { - if (arg == 2) - as_warn (_("Argument to .even ignored")); - else - count = get_absolute_expression (); - } - - if (current_stag != NULL && arg == 128) - { - if (current_stag->current_bitfield_offset != 0) - { - current_stag->current_bitfield_offset = 0; - ++abs_section_offset; - } - demand_empty_rest_of_line (); - return; - } - - ILLEGAL_WITHIN_STRUCT (); - - s_align_bytes (count << 1); -} - -/* Initialize multiple-bit fields withing a single word of memory. */ - -static void -tic54x_field (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - expressionS exp; - int size = 16; - char *p; - valueT value; - symbolS *label = line_label; - - if (current_stag != NULL) - { - tic54x_struct_field ('.'); - return; - } - - input_line_pointer = parse_expression (input_line_pointer, &exp); - - if (*input_line_pointer == ',') - { - ++input_line_pointer; - size = get_absolute_expression (); - if (size < 1 || size > 32) - { - as_bad (_("Invalid field size, must be from 1 to 32")); - ignore_rest_of_line (); - return; - } - } - - /* Truncate values to the field width. */ - if (exp.X_op != O_constant) - { - /* If the expression value is relocatable, the field size *must* - be 16. */ - if (size != 16) - { - as_bad (_("field size must be 16 when value is relocatable")); - ignore_rest_of_line (); - return; - } - - frag_now->tc_frag_data = 0; - emit_expr (&exp, 2); - } - else - { - unsigned long fmask = (size == 32) ? 0xFFFFFFFF : (1ul << size) - 1; - - value = exp.X_add_number; - exp.X_add_number &= fmask; - if (value != (valueT) exp.X_add_number) - as_warn (_("field value truncated")); - value = exp.X_add_number; - /* Bits are stored MS first. */ - while (size >= 16) - { - frag_now->tc_frag_data = 0; - p = frag_more (2); - md_number_to_chars (p, (value >> (size - 16)) & 0xFFFF, 2); - size -= 16; - } - if (size > 0) - { - int bit_offset = frag_bit_offset (frag_now, now_seg); - - fragS *alloc_frag = bit_offset_frag (frag_now, now_seg); - if (bit_offset == -1) - { - struct bit_info *bi = xmalloc (sizeof (struct bit_info)); - /* We don't know the previous offset at this time, so store the - info we need and figure it out later. */ - expressionS size_exp; - - size_exp.X_op = O_constant; - size_exp.X_add_number = size; - bi->seg = now_seg; - bi->type = TYPE_FIELD; - bi->value = value; - p = frag_var (rs_machine_dependent, - 4, 1, (relax_substateT) 0, - make_expr_symbol (&size_exp), (offsetT) 0, - (char *) bi); - goto getout; - } - else if (bit_offset == 0 || bit_offset + size > 16) - { - /* Align a new field. */ - p = frag_more (2); - frag_now->tc_frag_data = 0; - alloc_frag = frag_now; - } - else - { - /* Put the new value entirely within the existing one. */ - p = alloc_frag == frag_now ? - frag_now->fr_literal + frag_now_fix_octets () - 2 : - alloc_frag->fr_literal; - if (label != NULL) - { - symbol_set_frag (label, alloc_frag); - if (alloc_frag == frag_now) - S_SET_VALUE (label, frag_now_fix () - 1); - label = NULL; - } - } - value <<= 16 - alloc_frag->tc_frag_data - size; - - /* OR in existing value. */ - if (alloc_frag->tc_frag_data) - value |= ((unsigned short) p[1] << 8) | p[0]; - md_number_to_chars (p, value, 2); - alloc_frag->tc_frag_data += size; - if (alloc_frag->tc_frag_data == 16) - alloc_frag->tc_frag_data = 0; - } - } - getout: - demand_empty_rest_of_line (); -} - -/* Ideally, we want to check SEC_LOAD and SEC_HAS_CONTENTS, but those aren't - available yet. seg_info ()->bss is the next best thing. */ - -static int -tic54x_initialized_section (seg) - segT seg; -{ - return !seg_info (seg)->bss; -} - -/* .clink ["section name"] - - Marks the section as conditionally linked (link only if contents are - referenced elsewhere. - Without a name, refers to the current initialized section. - Name is required for uninitialized sections. */ - -static void -tic54x_clink (ignored) - int ignored ATTRIBUTE_UNUSED; -{ - segT seg = now_seg; - - ILLEGAL_WITHIN_STRUCT (); - - if (*input_line_pointer == '\"') - { - char *section_name = ++input_line_pointer; - char *name; - - while (is_a_char (next_char_of_string ())) - ; - know (input_line_pointer[-1] == '\"'); - input_line_pointer[-1] = 0; - name = xmalloc (input_line_pointer - section_name + 1); - strcpy (name, section_name); - - seg = bfd_get_section_by_name (stdoutput, name); - if (seg == NULL) - { - as_bad (_("Unrecognized section '%s'"), section_name); - ignore_rest_of_line (); - return; - } - } - else - { - if (!tic54x_initialized_section (seg)) - { - as_bad (_("Current section is unitialized, " - "section name required for .clink")); - ignore_rest_of_line (); - return; - } - } - - seg->flags |= SEC_TIC54X_CLINK; - - demand_empty_rest_of_line (); -} - -/* Change the default include directory to be the current source file's - directory, instead of the current working directory. If DOT is non-zero, - set to "." instead. */ - -static void -tic54x_set_default_include (dot) - int dot; -{ - char *dir = "."; - char *tmp = NULL; - - if (!dot) - { - char *curfile; - unsigned lineno; - - as_where (&curfile, &lineno); - dir = strcpy (xmalloc (strlen (curfile) + 1), curfile); - tmp = strrchr (dir, '/'); - } - if (tmp != NULL) - { - int len; - - *tmp = '\0'; - len = strlen (dir); - if (include_dir_count == 0) - { - include_dirs = (char **) xmalloc (sizeof (*include_dirs)); - include_dir_count = 1; - } - include_dirs[0] = dir; - if (len > include_dir_maxlen) - include_dir_maxlen = len; - } - else if (include_dirs != NULL) - include_dirs[0] = "."; -} - -/* .include "filename" | filename - .copy "filename" | filename - - FIXME 'include' file should be omitted from any output listing, - 'copy' should be included in any output listing - FIXME -- prevent any included files from changing listing (compat only) - FIXME -- need to include source file directory in search path; what's a - good way to do this? - - Entering/exiting included/copied file clears all local labels. */ - -static void -tic54x_include (ignored) - int ignored ATTRIBUTE_UNUSED; -{ - char newblock[] = " .newblock\n"; - char *filename; - char *input; - int len, c = -1; - - ILLEGAL_WITHIN_STRUCT (); - - SKIP_WHITESPACE (); - - if (*input_line_pointer == '"') - { - filename = demand_copy_C_string (&len); - demand_empty_rest_of_line (); - } - else - { - filename = input_line_pointer; - while (!is_end_of_line[(int) *input_line_pointer]) - ++input_line_pointer; - c = *input_line_pointer; - *input_line_pointer = '\0'; - filename = strcpy (xmalloc (strlen (filename) + 1), filename); - *input_line_pointer = c; - demand_empty_rest_of_line (); - } - /* Insert a partial line with the filename (for the sake of s_include) - and a .newblock. - The included file will be inserted before the newblock, so that the - newblock is executed after the included file is processed. */ - input = xmalloc (sizeof (newblock) + strlen (filename) + 4); - sprintf (input, "\"%s\"\n%s", filename, newblock); - input_scrub_insert_line (input); - - tic54x_clear_local_labels (0); - - tic54x_set_default_include (0); - - s_include (0); -} - -static void -tic54x_message (type) - int type; -{ - char *msg; - char c; - int len; - - ILLEGAL_WITHIN_STRUCT (); - - if (*input_line_pointer == '"') - msg = demand_copy_C_string (&len); - else - { - msg = input_line_pointer; - while (!is_end_of_line[(int) *input_line_pointer]) - ++input_line_pointer; - c = *input_line_pointer; - *input_line_pointer = 0; - msg = strcpy (xmalloc (strlen (msg) + 1), msg); - *input_line_pointer = c; - } - - switch (type) - { - case 'm': - as_tsktsk ("%s", msg); - break; - case 'w': - as_warn ("%s", msg); - break; - case 'e': - as_bad ("%s", msg); - break; - } - - demand_empty_rest_of_line (); -} - -/* .label <symbol> - Define a special symbol that refers to the loadtime address rather than the - runtime address within the current section. - - This symbol gets a special storage class so that when it is resolved, it is - resolved relative to the load address (lma) of the section rather than the - run address (vma). */ - -static void -tic54x_label (ignored) - int ignored ATTRIBUTE_UNUSED; -{ - char *name = input_line_pointer; - symbolS *symbolP; - int c; - - ILLEGAL_WITHIN_STRUCT (); - - c = get_symbol_end (); - symbolP = colon (name); - S_SET_STORAGE_CLASS (symbolP, C_STATLAB); - - *input_line_pointer = c; - demand_empty_rest_of_line (); -} - -/* .mmregs - Install all memory-mapped register names into the symbol table as - absolute local symbols. */ - -static void -tic54x_mmregs (ignored) - int ignored ATTRIBUTE_UNUSED; -{ - symbol *sym; - - ILLEGAL_WITHIN_STRUCT (); - - for (sym = (symbol *) mmregs; sym->name; sym++) - { - symbolS *symbolP = symbol_new (sym->name, absolute_section, - (valueT) sym->value, &zero_address_frag); - SF_SET_LOCAL (symbolP); - symbol_table_insert (symbolP); - } -} - -/* .loop [count] - Count defaults to 1024. */ - -static void -tic54x_loop (count) - int count; -{ - ILLEGAL_WITHIN_STRUCT (); - - SKIP_WHITESPACE (); - if (!is_end_of_line[(int) *input_line_pointer]) - count = get_absolute_expression (); - - do_repeat (count, "LOOP", "ENDLOOP"); -} - -/* Normally, endloop gets eaten by the preceding loop. */ - -static void -tic54x_endloop (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - as_bad (_("ENDLOOP without corresponding LOOP")); - ignore_rest_of_line (); -} - -/* .break [condition]. */ - -static void -tic54x_break (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - int cond = 1; - - ILLEGAL_WITHIN_STRUCT (); - - SKIP_WHITESPACE (); - if (!is_end_of_line[(int) *input_line_pointer]) - cond = get_absolute_expression (); - - if (cond) - end_repeat (substitution_line ? 1 : 0); -} - -static void -set_address_mode (mode) - int mode; -{ - amode = mode; - if (mode == far_mode) - { - symbolS *symbolP = symbol_new ("__allow_far", absolute_section, - (valueT) 1, &zero_address_frag); - SF_SET_LOCAL (symbolP); - symbol_table_insert (symbolP); - } -} - -static int address_mode_needs_set = 1; - -static void -tic54x_address_mode (mode) - int mode; -{ - if (assembly_begun && amode != (unsigned) mode) - { - as_bad (_("Mixing of normal and extended addressing not supported")); - ignore_rest_of_line (); - return; - } - if (mode == far_mode && cpu != VNONE && cpu != V548 && cpu != V549) - { - as_bad (_("Extended addressing not supported on the specified CPU")); - ignore_rest_of_line (); - return; - } - - set_address_mode (mode); - demand_empty_rest_of_line (); -} - -/* .sblock "section"|section [,...,"section"|section] - Designate initialized sections for blocking. */ - -static void -tic54x_sblock (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - int c = ','; - - ILLEGAL_WITHIN_STRUCT (); - - while (c == ',') - { - segT seg; - char *name; - - if (*input_line_pointer == '"') - { - int len; - - name = demand_copy_C_string (&len); - } - else - { - char *section_name = input_line_pointer; - - c = get_symbol_end (); - name = xmalloc (strlen (section_name) + 1); - strcpy (name, section_name); - *input_line_pointer = c; - } - - seg = bfd_get_section_by_name (stdoutput, name); - if (seg == NULL) - { - as_bad (_("Unrecognized section '%s'"), name); - ignore_rest_of_line (); - return; - } - else if (!tic54x_initialized_section (seg)) - { - as_bad (_(".sblock may be used for initialized sections only")); - ignore_rest_of_line (); - return; - } - seg->flags |= SEC_TIC54X_BLOCK; - - c = *input_line_pointer; - if (!is_end_of_line[(int) c]) - ++input_line_pointer; - } - - demand_empty_rest_of_line (); -} - -/* symbol .set value - symbol .equ value - - value must be defined externals; no forward-referencing allowed - symbols assigned with .set/.equ may not be redefined. */ - -static void -tic54x_set (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - symbolS *symbolP; - char *name; - - ILLEGAL_WITHIN_STRUCT (); - - if (!line_label) - { - as_bad (_("Symbol missing for .set/.equ")); - ignore_rest_of_line (); - return; - } - name = xstrdup (S_GET_NAME (line_label)); - line_label = NULL; - if ((symbolP = symbol_find (name)) == NULL - && (symbolP = md_undefined_symbol (name)) == NULL) - { - symbolP = symbol_new (name, absolute_section, 0, &zero_address_frag); - S_SET_STORAGE_CLASS (symbolP, C_STAT); - } - free (name); - S_SET_DATA_TYPE (symbolP, T_INT); - S_SET_SEGMENT (symbolP, absolute_section); - symbol_table_insert (symbolP); - pseudo_set (symbolP); - demand_empty_rest_of_line (); -} - -/* .fclist - .fcnolist - List false conditional blocks. */ - -static void -tic54x_fclist (show) - int show; -{ - if (show) - listing &= ~LISTING_NOCOND; - else - listing |= LISTING_NOCOND; - demand_empty_rest_of_line (); -} - -static void -tic54x_sslist (show) - int show; -{ - ILLEGAL_WITHIN_STRUCT (); - - listing_sslist = show; -} - -/* .var SYM[,...,SYMN] - Define a substitution string to be local to a macro. */ - -static void -tic54x_var (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - static char empty[] = ""; - char *name; - int c; - - ILLEGAL_WITHIN_STRUCT (); - - if (macro_level == 0) - { - as_bad (_(".var may only be used within a macro definition")); - ignore_rest_of_line (); - return; - } - do - { - if (!ISALPHA (*input_line_pointer)) - { - as_bad (_("Substitution symbols must begin with a letter")); - ignore_rest_of_line (); - return; - } - name = input_line_pointer; - c = get_symbol_end (); - /* .var symbols start out with a null string. */ - name = strcpy (xmalloc (strlen (name) + 1), name); - hash_insert (subsym_hash[macro_level], name, empty); - *input_line_pointer = c; - if (c == ',') - { - ++input_line_pointer; - if (is_end_of_line[(int) *input_line_pointer]) - c = *input_line_pointer; - } - } - while (c == ','); - - demand_empty_rest_of_line (); -} - -/* .mlib <macro library filename> - - Macro libraries are archived (standard AR-format) text macro definitions - Expand the file and include it. - - FIXME need to try the source file directory as well. */ - -static void -tic54x_mlib (ignore) - int ignore ATTRIBUTE_UNUSED; -{ - char *filename; - char *path; - int len, i; - bfd *abfd, *mbfd; - - ILLEGAL_WITHIN_STRUCT (); - - /* Parse the filename. */ - if (*input_line_pointer == '"') - { - if ((filename = demand_copy_C_string (&len)) == NULL) - return; - } - else - { - SKIP_WHITESPACE (); - len = 0; - while (!is_end_of_line[(int) *input_line_pointer] - && !ISSPACE (*input_line_pointer)) - { - obstack_1grow (¬es, *input_line_pointer); - ++input_line_pointer; - ++len; - } - obstack_1grow (¬es, '\0'); - filename = obstack_finish (¬es); - } - demand_empty_rest_of_line (); - - tic54x_set_default_include (0); - path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); - - for (i = 0; i < include_dir_count; i++) - { - FILE *try; - - strcpy (path, include_dirs[i]); - strcat (path, "/"); - strcat (path, filename); - if ((try = fopen (path, "r")) != NULL) - { - fclose (try); - break; - } - } - - if (i >= include_dir_count) - { - free (path); - path = filename; - } - - /* FIXME: if path is found, malloc'd storage is not freed. Of course, this - happens all over the place, and since the assembler doesn't usually keep - running for a very long time, it really doesn't matter. */ - register_dependency (path); - - /* Expand all archive entries to temporary files and include them. */ - abfd = bfd_openr (path, NULL); - if (!abfd) - { - as_bad (_("Can't open macro library file '%s' for reading."), path); - as_perror ("%s", path); - ignore_rest_of_line (); - return; - } - if (!bfd_check_format (abfd, bfd_archive)) - { - as_bad (_("File '%s' not in macro archive format"), path); - ignore_rest_of_line (); - return; - } - - /* Open each BFD as binary (it should be straight ASCII text). */ - for (mbfd = bfd_openr_next_archived_file (abfd, NULL); - mbfd != NULL; mbfd = bfd_openr_next_archived_file (abfd, mbfd)) - { - /* Get a size at least as big as the archive member. */ - bfd_size_type size = bfd_get_size (mbfd); - char *buf = xmalloc (size); - char *fname = tmpnam (NULL); - FILE *ftmp; - - /* We're not sure how big it is, but it will be smaller than "size". */ - bfd_bread (buf, size, mbfd); - - /* Write to a temporary file, then use s_include to include it - a bit of a hack. */ - ftmp = fopen (fname, "w+b"); - fwrite ((void *) buf, size, 1, ftmp); - if (buf[size - 1] != '\n') - fwrite ("\n", 1, 1, ftmp); - fclose (ftmp); - free (buf); - input_scrub_insert_file (fname); - unlink (fname); - } -} - -const pseudo_typeS md_pseudo_table[] = -{ - { "algebraic", s_ignore , 0 }, - { "align" , tic54x_align_words , 128 }, - { "ascii" , tic54x_stringer , 'p' }, - { "asciz" , tic54x_stringer , 'P' }, - { "even" , tic54x_align_words , 2 }, - { "asg" , tic54x_asg , 0 }, - { "eval" , tic54x_eval , 0 }, - { "bss" , tic54x_bss , 0 }, - { "byte" , tic54x_cons , 'b' }, - { "ubyte" , tic54x_cons , 'B' }, - { "char" , tic54x_cons , 'c' }, - { "uchar" , tic54x_cons , 'C' }, - { "clink" , tic54x_clink , 0 }, - { "c_mode" , tic54x_address_mode , c_mode }, - { "copy" , tic54x_include , 'c' }, - { "include" , tic54x_include , 'i' }, - { "data" , tic54x_sect , 'd' }, - { "double" , tic54x_float_cons , 'd' }, - { "ldouble" , tic54x_float_cons , 'l' }, - { "drlist" , s_ignore , 0 }, - { "drnolist" , s_ignore , 0 }, - { "emsg" , tic54x_message , 'e' }, - { "mmsg" , tic54x_message , 'm' }, - { "wmsg" , tic54x_message , 'w' }, - { "far_mode" , tic54x_address_mode , far_mode }, - { "fclist" , tic54x_fclist , 1 }, - { "fcnolist" , tic54x_fclist , 0 }, - { "field" , tic54x_field , -1 }, - { "float" , tic54x_float_cons , 'f' }, - { "xfloat" , tic54x_float_cons , 'x' }, - { "global" , tic54x_global , 'g' }, - { "def" , tic54x_global , 'd' }, - { "ref" , tic54x_global , 'r' }, - { "half" , tic54x_cons , 'h' }, - { "uhalf" , tic54x_cons , 'H' }, - { "short" , tic54x_cons , 's' }, - { "ushort" , tic54x_cons , 'S' }, - { "if" , s_if , (int) O_ne }, - { "elseif" , s_elseif , (int) O_ne }, - { "else" , s_else , 0 }, - { "endif" , s_endif , 0 }, - { "int" , tic54x_cons , 'i' }, - { "uint" , tic54x_cons , 'I' }, - { "word" , tic54x_cons , 'w' }, - { "uword" , tic54x_cons , 'W' }, - { "label" , tic54x_label , 0 }, /* Loadtime - address. */ - { "length" , s_ignore , 0 }, - { "width" , s_ignore , 0 }, - { "long" , tic54x_cons , 'l' }, - { "ulong" , tic54x_cons , 'L' }, - { "xlong" , tic54x_cons , 'x' }, - { "loop" , tic54x_loop , 1024 }, - { "break" , tic54x_break , 0 }, - { "endloop" , tic54x_endloop , 0 }, - { "mlib" , tic54x_mlib , 0 }, - { "mlist" , s_ignore , 0 }, - { "mnolist" , s_ignore , 0 }, - { "mmregs" , tic54x_mmregs , 0 }, - { "newblock" , tic54x_clear_local_labels, 0 }, - { "option" , s_ignore , 0 }, - { "p2align" , tic54x_p2align , 0 }, - { "sblock" , tic54x_sblock , 0 }, - { "sect" , tic54x_sect , '*' }, - { "set" , tic54x_set , 0 }, - { "equ" , tic54x_set , 0 }, - { "space" , tic54x_space , 0 }, - { "bes" , tic54x_space , 1 }, - { "sslist" , tic54x_sslist , 1 }, - { "ssnolist" , tic54x_sslist , 0 }, - { "string" , tic54x_stringer , 's' }, - { "pstring" , tic54x_stringer , 'p' }, - { "struct" , tic54x_struct , 0 }, - { "tag" , tic54x_tag , 0 }, - { "endstruct", tic54x_endstruct , 0 }, - { "tab" , s_ignore , 0 }, - { "text" , tic54x_sect , 't' }, - { "union" , tic54x_struct , 1 }, - { "endunion" , tic54x_endstruct , 1 }, - { "usect" , tic54x_usect , 0 }, - { "var" , tic54x_var , 0 }, - { "version" , tic54x_version , 0 }, - {0 , 0 , 0 } -}; - -int -md_parse_option (c, arg) - int c; - char *arg; -{ - switch (c) - { - default: - return 0; - case OPTION_COFF_VERSION: - { - int version = atoi (arg); - - if (version != 0 && version != 1 && version != 2) - as_fatal (_("Bad COFF version '%s'"), arg); - /* FIXME -- not yet implemented. */ - break; - } - case OPTION_CPU_VERSION: - { - cpu = lookup_version (arg); - cpu_needs_set = 1; - if (cpu == VNONE) - as_fatal (_("Bad CPU version '%s'"), arg); - break; - } - case OPTION_ADDRESS_MODE: - amode = far_mode; - address_mode_needs_set = 1; - break; - case OPTION_STDERR_TO_FILE: - { - char *filename = arg; - FILE *fp = fopen (filename, "w+"); - - if (fp == NULL) - as_fatal (_("Can't redirect stderr to the file '%s'"), filename); - fclose (fp); - if ((fp = freopen (filename, "w+", stderr)) == NULL) - as_fatal (_("Can't redirect stderr to the file '%s'"), filename); - break; - } - } - - return 1; -} - -/* Create a "local" substitution string hash table for a new macro level - Some docs imply that macros have to use .newblock in order to be able - to re-use a local label. We effectively do an automatic .newblock by - deleting the local label hash between macro invocations. */ - -void -tic54x_macro_start () -{ - ++macro_level; - subsym_hash[macro_level] = hash_new (); - local_label_hash[macro_level] = hash_new (); -} - -void -tic54x_macro_info (macro) - const macro_entry *macro; -{ - const formal_entry *entry; - - /* Put the formal args into the substitution symbol table. */ - for (entry = macro->formals; entry; entry = entry->next) - { - char *name = strncpy (xmalloc (entry->name.len + 1), - entry->name.ptr, entry->name.len); - char *value = strncpy (xmalloc (entry->actual.len + 1), - entry->actual.ptr, entry->actual.len); - - name[entry->name.len] = '\0'; - value[entry->actual.len] = '\0'; - hash_insert (subsym_hash[macro_level], name, value); - } -} - -/* Get rid of this macro's .var's, arguments, and local labels. */ - -void -tic54x_macro_end () -{ - hash_die (subsym_hash[macro_level]); - subsym_hash[macro_level] = NULL; - hash_die (local_label_hash[macro_level]); - local_label_hash[macro_level] = NULL; - --macro_level; -} - -static int -subsym_symlen (a, ignore) - char *a; - char *ignore ATTRIBUTE_UNUSED; -{ - return strlen (a); -} - -/* Compare symbol A to string B. */ - -static int -subsym_symcmp (a, b) - char *a; - char *b; -{ - return strcmp (a, b); -} - -/* Return the index of the first occurrence of B in A, or zero if none - assumes b is an integer char value as a string. Index is one-based. */ - -static int -subsym_firstch (a, b) - char *a; - char *b; -{ - int val = atoi (b); - char *tmp = strchr (a, val); - - return tmp ? tmp - a + 1 : 0; -} - -/* Similar to firstch, but returns index of last occurrence of B in A. */ - -static int -subsym_lastch (a, b) - char *a; - char *b; -{ - int val = atoi (b); - char *tmp = strrchr (a, val); - - return tmp ? tmp - a + 1 : 0; -} - -/* Returns 1 if string A is defined in the symbol table (NOT the substitution - symbol table). */ - -static int -subsym_isdefed (a, ignore) - char *a; - char *ignore ATTRIBUTE_UNUSED; -{ - symbolS *symbolP = symbol_find (a); - - return symbolP != NULL; -} - -/* Assign first member of comma-separated list B (e.g. "1,2,3") to the symbol - A, or zero if B is a null string. Both arguments *must* be substitution - symbols, unsubstituted. */ - -static int -subsym_ismember (sym, list) - char *sym; - char *list; -{ - char *elem, *ptr, *listv; - - if (!list) - return 0; - - listv = subsym_lookup (list, macro_level); - if (!listv) - { - as_bad (_("Undefined substitution symbol '%s'"), list); - ignore_rest_of_line (); - return 0; - } - - ptr = elem = xmalloc (strlen (listv) + 1); - strcpy (elem, listv); - while (*ptr && *ptr != ',') - ++ptr; - *ptr++ = 0; - - subsym_create_or_replace (sym, elem); - - /* Reassign the list. */ - subsym_create_or_replace (list, ptr); - - /* Assume this value, docs aren't clear. */ - return *list != 0; -} - -/* Return zero if not a constant; otherwise: - 1 if binary - 2 if octal - 3 if hexadecimal - 4 if character - 5 if decimal. */ - -static int -subsym_iscons (a, ignore) - char *a; - char *ignore ATTRIBUTE_UNUSED; -{ - expressionS exp; - - parse_expression (a, &exp); - - if (exp.X_op == O_constant) - { - int len = strlen (a); - - switch (TOUPPER (a[len - 1])) - { - case 'B': - return 1; - case 'Q': - return 2; - case 'H': - return 3; - case '\'': - return 4; - default: - break; - } - /* No suffix; either octal, hex, or decimal. */ - if (*a == '0' && len > 1) - { - if (TOUPPER (a[1]) == 'X') - return 3; - return 2; - } - return 5; - } - - return 0; -} - -/* Return 1 if A is a valid symbol name. Expects string input. */ - -static int -subsym_isname (a, ignore) - char *a; - char *ignore ATTRIBUTE_UNUSED; -{ - if (!is_name_beginner (*a)) - return 0; - while (*a) - { - if (!is_part_of_name (*a)) - return 0; - ++a; - } - return 1; -} - -/* Return whether the string is a register; accepts ar0-7, unless .mmregs has - been seen; if so, recognize any memory-mapped register. - Note this does not recognize "A" or "B" accumulators. */ - -static int -subsym_isreg (a, ignore) - char *a; - char *ignore ATTRIBUTE_UNUSED; -{ - if (hash_find (reg_hash, a)) - return 1; - if (hash_find (mmreg_hash, a)) - return 1; - return 0; -} - -/* Return the structure size, given the stag. */ - -static int -subsym_structsz (name, ignore) - char *name; - char *ignore ATTRIBUTE_UNUSED; -{ - struct stag *stag = (struct stag *) hash_find (stag_hash, name); - - if (stag) - return stag->size; - - return 0; -} - -/* If anybody actually uses this, they can fix it :) - FIXME I'm not sure what the "reference point" of a structure is. It might - be either the initial offset given .struct, or it may be the offset of the - structure within another structure, or it might be something else - altogether. since the TI assembler doesn't seem to ever do anything but - return zero, we punt and return zero. */ - -static int -subsym_structacc (stag_name, ignore) - char *stag_name ATTRIBUTE_UNUSED; - char *ignore ATTRIBUTE_UNUSED; -{ - return 0; -} - -static float -math_ceil (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) ceil (arg1); -} - -static float -math_cvi (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (int) arg1; -} - -static float -math_floor (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) floor (arg1); -} - -static float -math_fmod (arg1, arg2) - float arg1; - float arg2; -{ - return (int) arg1 % (int) arg2; -} - -static float -math_int (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return ((float) ((int) arg1)) == arg1; -} - -static float -math_round (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return arg1 > 0 ? (int) (arg1 + 0.5) : (int) (arg1 - 0.5); -} - -static float -math_sgn (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (arg1 < 0) ? -1 : (arg1 ? 1 : 0); -} - -static float -math_trunc (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (int) arg1; -} - -static float -math_acos (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) acos (arg1); -} - -static float -math_asin (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) asin (arg1); -} - -static float -math_atan (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) atan (arg1); -} - -static float -math_atan2 (arg1, arg2) - float arg1; - float arg2; -{ - return (float) atan2 (arg1, arg2); -} - -static float -math_cosh (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) cosh (arg1); -} - -static float -math_cos (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) cos (arg1); -} - -static float -math_cvf (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) arg1; -} - -static float -math_exp (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) exp (arg1); -} - -static float -math_fabs (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) fabs (arg1); -} - -/* expr1 * 2^expr2. */ - -static float -math_ldexp (arg1, arg2) - float arg1; - float arg2; -{ - return arg1 * (float) pow (2.0, arg2); -} - -static float -math_log10 (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) log10 (arg1); -} - -static float -math_log (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) log (arg1); -} - -static float -math_max (arg1, arg2) - float arg1; - float arg2; -{ - return (arg1 > arg2) ? arg1 : arg2; -} - -static float -math_min (arg1, arg2) - float arg1; - float arg2; -{ - return (arg1 < arg2) ? arg1 : arg2; -} - -static float -math_pow (arg1, arg2) - float arg1; - float arg2; -{ - return (float) pow (arg1, arg2); -} - -static float -math_sin (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) sin (arg1); -} - -static float -math_sinh (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) sinh (arg1); -} - -static float -math_sqrt (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) sqrt (arg1); -} - -static float -math_tan (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) tan (arg1); -} - -static float -math_tanh (arg1, ignore) - float arg1; - float ignore ATTRIBUTE_UNUSED; -{ - return (float) tanh (arg1); -} - -/* Built-in substitution symbol functions and math functions. */ -typedef struct -{ - char *name; - int (*proc) PARAMS ((char *, char *)); - int nargs; -} subsym_proc_entry; - -static const subsym_proc_entry subsym_procs[] = -{ - /* Assembler built-in string substitution functions. */ - { "$symlen", subsym_symlen, 1, }, - { "$symcmp", subsym_symcmp, 2, }, - { "$firstch", subsym_firstch, 2, }, - { "$lastch", subsym_lastch, 2, }, - { "$isdefed", subsym_isdefed, 1, }, - { "$ismember", subsym_ismember, 2, }, - { "$iscons", subsym_iscons, 1, }, - { "$isname", subsym_isname, 1, }, - { "$isreg", subsym_isreg, 1, }, - { "$structsz", subsym_structsz, 1, }, - { "$structacc", subsym_structacc, 1, }, - { NULL, NULL, 0 }, -}; - -typedef struct -{ - char *name; - float (*proc) PARAMS ((float, float)); - int nargs; - int int_return; -} math_proc_entry; - -static const math_proc_entry math_procs[] = -{ - /* Integer-returning built-in math functions. */ - { "$cvi", math_cvi, 1, 1 }, - { "$int", math_int, 1, 1 }, - { "$sgn", math_sgn, 1, 1 }, - - /* Float-returning built-in math functions. */ - { "$acos", math_acos, 1, 0 }, - { "$asin", math_asin, 1, 0 }, - { "$atan", math_atan, 1, 0 }, - { "$atan2", math_atan2, 2, 0 }, - { "$ceil", math_ceil, 1, 0 }, - { "$cosh", math_cosh, 1, 0 }, - { "$cos", math_cos, 1, 0 }, - { "$cvf", math_cvf, 1, 0 }, - { "$exp", math_exp, 1, 0 }, - { "$fabs", math_fabs, 1, 0 }, - { "$floor", math_floor, 1, 0 }, - { "$fmod", math_fmod, 2, 0 }, - { "$ldexp", math_ldexp, 2, 0 }, - { "$log10", math_log10, 1, 0 }, - { "$log", math_log, 1, 0 }, - { "$max", math_max, 2, 0 }, - { "$min", math_min, 2, 0 }, - { "$pow", math_pow, 2, 0 }, - { "$round", math_round, 1, 0 }, - { "$sin", math_sin, 1, 0 }, - { "$sinh", math_sinh, 1, 0 }, - { "$sqrt", math_sqrt, 1, 0 }, - { "$tan", math_tan, 1, 0 }, - { "$tanh", math_tanh, 1, 0 }, - { "$trunc", math_trunc, 1, 0 }, - { NULL, NULL, 0, 0 }, -}; - -void -md_begin () -{ - template *tm; - symbol *sym; - const subsym_proc_entry *subsym_proc; - const math_proc_entry *math_proc; - const char *hash_err; - char **symname; - char *TIC54X_DIR = getenv ("TIC54X_DIR"); - char *A_DIR = TIC54X_DIR ? TIC54X_DIR : getenv ("A_DIR"); - - local_label_id = 0; - - /* Look for A_DIR and add it to the include list. */ - if (A_DIR != NULL) - { - char *tmp = xstrdup (A_DIR); - - do - { - char *next = strchr (tmp, ';'); - - if (next) - *next++ = '\0'; - add_include_dir (tmp); - tmp = next; - } - while (tmp != NULL); - } - - op_hash = hash_new (); - for (tm = (template *) tic54x_optab; tm->name; tm++) - { - if (hash_find (op_hash, tm->name)) - continue; - hash_err = hash_insert (op_hash, tm->name, (char *) tm); - if (hash_err) - as_fatal ("Internal Error: Can't hash %s: %s", - tm->name, hash_err); - } - parop_hash = hash_new (); - for (tm = (template *) tic54x_paroptab; tm->name; tm++) - { - if (hash_find (parop_hash, tm->name)) - continue; - hash_err = hash_insert (parop_hash, tm->name, (char *) tm); - if (hash_err) - as_fatal ("Internal Error: Can't hash %s: %s", - tm->name, hash_err); - } - reg_hash = hash_new (); - for (sym = (symbol *) regs; sym->name; sym++) - { - /* Add basic registers to the symbol table. */ - symbolS *symbolP = symbol_new (sym->name, absolute_section, - (valueT) sym->value, &zero_address_frag); - SF_SET_LOCAL (symbolP); - symbol_table_insert (symbolP); - hash_err = hash_insert (reg_hash, sym->name, (char *) sym); - } - for (sym = (symbol *) mmregs; sym->name; sym++) - hash_err = hash_insert (reg_hash, sym->name, (char *) sym); - mmreg_hash = hash_new (); - for (sym = (symbol *) mmregs; sym->name; sym++) - hash_err = hash_insert (mmreg_hash, sym->name, (char *) sym); - - cc_hash = hash_new (); - for (sym = (symbol *) condition_codes; sym->name; sym++) - hash_err = hash_insert (cc_hash, sym->name, (char *) sym); - - cc2_hash = hash_new (); - for (sym = (symbol *) cc2_codes; sym->name; sym++) - hash_err = hash_insert (cc2_hash, sym->name, (char *) sym); - - cc3_hash = hash_new (); - for (sym = (symbol *) cc3_codes; sym->name; sym++) - hash_err = hash_insert (cc3_hash, sym->name, (char *) sym); - - sbit_hash = hash_new (); - for (sym = (symbol *) status_bits; sym->name; sym++) - hash_err = hash_insert (sbit_hash, sym->name, (char *) sym); - - misc_symbol_hash = hash_new (); - for (symname = (char **) misc_symbols; *symname; symname++) - hash_err = hash_insert (misc_symbol_hash, *symname, *symname); - - /* Only the base substitution table and local label table are initialized; - the others (for local macro substitution) get instantiated as needed. */ - local_label_hash[0] = hash_new (); - subsym_hash[0] = hash_new (); - for (subsym_proc = subsym_procs; subsym_proc->name; subsym_proc++) - hash_err = hash_insert (subsym_hash[0], subsym_proc->name, - (char *) subsym_proc); - - math_hash = hash_new (); - for (math_proc = math_procs; math_proc->name; math_proc++) - { - /* Insert into the main subsym hash for recognition; insert into - the math hash to actually store information. */ - hash_err = hash_insert (subsym_hash[0], math_proc->name, - (char *) math_proc); - hash_err = hash_insert (math_hash, math_proc->name, - (char *) math_proc); - } - subsym_recurse_hash = hash_new (); - stag_hash = hash_new (); -} - -static int -is_accumulator (operand) - struct opstruct *operand; -{ - return strcasecmp (operand->buf, "a") == 0 - || strcasecmp (operand->buf, "b") == 0; -} - -/* Return the number of operands found, or -1 on error, copying the - operands into the given array and the accompanying expressions into - the next array. */ - -static int -get_operands (operands, line) - struct opstruct operands[]; - char *line; -{ - char *lptr = line; - int numexp = 0; - int expecting_operand = 0; - int i; - - while (numexp < MAX_OPERANDS && !is_end_of_line[(int) *lptr]) - { - int paren_not_balanced = 0; - char *op_start, *op_end; - - while (*lptr && ISSPACE (*lptr)) - ++lptr; - op_start = lptr; - while (paren_not_balanced || *lptr != ',') - { - if (*lptr == '\0') - { - if (paren_not_balanced) - { - as_bad ("Unbalanced parenthesis in operand %d", numexp); - return -1; - } - else - break; - } - if (*lptr == '(') - ++paren_not_balanced; - else if (*lptr == ')') - --paren_not_balanced; - ++lptr; - } - op_end = lptr; - if (op_end != op_start) - { - int len = op_end - op_start; - - strncpy (operands[numexp].buf, op_start, len); - operands[numexp].buf[len] = 0; - /* Trim trailing spaces; while the preprocessor gets rid of most, - there are weird usage patterns that can introduce them - (i.e. using strings for macro args). */ - while (len > 0 && ISSPACE (operands[numexp].buf[len - 1])) - operands[numexp].buf[--len] = 0; - lptr = op_end; - ++numexp; - } - else - { - if (expecting_operand || *lptr == ',') - { - as_bad ("Expecting operand after ','"); - return -1; - } - } - if (*lptr == ',') - { - if (*++lptr == '\0') - { - as_bad ("Expecting operand after ','"); - return -1; - } - expecting_operand = 1; - } - } - - while (*lptr && ISSPACE (*lptr++)) - ; - if (!is_end_of_line[(int) *lptr]) - { - as_bad ("Extra junk on line"); - return -1; - } - - /* OK, now parse them into expressions. */ - for (i = 0; i < numexp; i++) - { - memset (&operands[i].exp, 0, sizeof (operands[i].exp)); - if (operands[i].buf[0] == '#') - { - /* Immediate. */ - parse_expression (operands[i].buf + 1, &operands[i].exp); - } - else if (operands[i].buf[0] == '@') - { - /* Direct notation. */ - parse_expression (operands[i].buf + 1, &operands[i].exp); - } - else if (operands[i].buf[0] == '*') - { - /* Indirect. */ - char *paren = strchr (operands[i].buf, '('); - - /* Allow immediate syntax in the inner expression. */ - if (paren && paren[1] == '#') - *++paren = '('; - - /* Pull out the lk expression or SP offset, if present. */ - if (paren != NULL) - { - int len = strlen (paren); - char *end = paren + len; - int c; - - while (end[-1] != ')') - if (--end <= paren) - { - as_bad (_("Badly formed address expression")); - return -1; - } - c = *end; - *end = '\0'; - parse_expression (paren, &operands[i].exp); - *end = c; - } - else - operands[i].exp.X_op = O_absent; - } - else - parse_expression (operands[i].buf, &operands[i].exp); - } - - return numexp; -} - -/* Predicates for different operand types. */ - -static int -is_immediate (operand) - struct opstruct *operand; -{ - return *operand->buf == '#'; -} - -/* This is distinguished from immediate because some numbers must be constants - and must *not* have the '#' prefix. */ - -static int -is_absolute (operand) - struct opstruct *operand; -{ - return operand->exp.X_op == O_constant && !is_immediate (operand); -} - -/* Is this an indirect operand? */ - -static int -is_indirect (operand) - struct opstruct *operand; -{ - return operand->buf[0] == '*'; -} - -/* Is this a valid dual-memory operand? */ - -static int -is_dual (operand) - struct opstruct *operand; -{ - if (is_indirect (operand) && strncasecmp (operand->buf, "*ar", 3) == 0) - { - char *tmp = operand->buf + 3; - int arf; - int valid_mod; - - arf = *tmp++ - '0'; - /* Only allow *ARx, *ARx-, *ARx+, or *ARx+0%. */ - valid_mod = *tmp == '\0' || - strcasecmp (tmp, "-") == 0 || - strcasecmp (tmp, "+") == 0 || - strcasecmp (tmp, "+0%") == 0; - return arf >= 2 && arf <= 5 && valid_mod; - } - return 0; -} - -static int -is_mmreg (operand) - struct opstruct *operand; -{ - return (is_absolute (operand) - || is_immediate (operand) - || hash_find (mmreg_hash, operand->buf) != 0); -} - -static int -is_type (operand, type) - struct opstruct *operand; - enum optype type; -{ - switch (type) - { - case OP_None: - return operand->buf[0] == 0; - case OP_Xmem: - case OP_Ymem: - return is_dual (operand); - case OP_Sind: - return is_indirect (operand); - case OP_xpmad_ms7: - /* This one *must* be immediate. */ - return is_immediate (operand); - case OP_xpmad: - case OP_pmad: - case OP_PA: - case OP_dmad: - case OP_Lmem: - case OP_MMR: - return 1; - case OP_Smem: - /* Address may be a numeric, indirect, or an expression. */ - return !is_immediate (operand); - case OP_MMRY: - case OP_MMRX: - return is_mmreg (operand); - case OP_SRC: - case OP_SRC1: - case OP_RND: - case OP_DST: - return is_accumulator (operand); - case OP_B: - return is_accumulator (operand) && TOUPPER (operand->buf[0]) == 'B'; - case OP_A: - return is_accumulator (operand) && TOUPPER (operand->buf[0]) == 'A'; - case OP_ARX: - return strncasecmp ("ar", operand->buf, 2) == 0 - && ISDIGIT (operand->buf[2]); - case OP_SBIT: - return hash_find (sbit_hash, operand->buf) != 0 || is_absolute (operand); - case OP_CC: - return hash_find (cc_hash, operand->buf) != 0; - case OP_CC2: - return hash_find (cc2_hash, operand->buf) != 0; - case OP_CC3: - return hash_find (cc3_hash, operand->buf) != 0 - || is_immediate (operand) || is_absolute (operand); - case OP_16: - return (is_immediate (operand) || is_absolute (operand)) - && operand->exp.X_add_number == 16; - case OP_N: - /* Allow st0 or st1 instead of a numeric. */ - return is_absolute (operand) || is_immediate (operand) || - strcasecmp ("st0", operand->buf) == 0 || - strcasecmp ("st1", operand->buf) == 0; - case OP_12: - case OP_123: - return is_absolute (operand) || is_immediate (operand); - case OP_SHFT: - return (is_immediate (operand) || is_absolute (operand)) - && operand->exp.X_add_number >= 0 && operand->exp.X_add_number < 16; - case OP_SHIFT: - /* Let this one catch out-of-range values. */ - return (is_immediate (operand) || is_absolute (operand)) - && operand->exp.X_add_number != 16; - case OP_BITC: - case OP_031: - case OP_k8: - return is_absolute (operand) || is_immediate (operand); - case OP_k8u: - return is_immediate (operand) - && operand->exp.X_op == O_constant - && operand->exp.X_add_number >= 0 - && operand->exp.X_add_number < 256; - case OP_lk: - case OP_lku: - /* Allow anything; assumes opcodes are ordered with Smem operands - versions first. */ - return 1; - case OP_k5: - case OP_k3: - case OP_k9: - /* Just make sure it's an integer; check range later. */ - return is_immediate (operand); - case OP_T: - return strcasecmp ("t", operand->buf) == 0 || - strcasecmp ("treg", operand->buf) == 0; - case OP_TS: - return strcasecmp ("ts", operand->buf) == 0; - case OP_ASM: - return strcasecmp ("asm", operand->buf) == 0; - case OP_TRN: - return strcasecmp ("trn", operand->buf) == 0; - case OP_DP: - return strcasecmp ("dp", operand->buf) == 0; - case OP_ARP: - return strcasecmp ("arp", operand->buf) == 0; - default: - return 0; - } -} - -static int -operands_match (insn, operands, opcount, refoptype, minops, maxops) - tic54x_insn *insn; - struct opstruct *operands; - int opcount; - const enum optype *refoptype; - int minops; - int maxops; -{ - int op = 0, refop = 0; - - if (opcount == 0 && minops == 0) - return 1; - - while (op <= maxops && refop <= maxops) - { - while (!is_type (&operands[op], OPTYPE (refoptype[refop]))) - { - /* Skip an optional template operand if it doesn't agree - with the current operand. */ - if (refoptype[refop] & OPT) - { - ++refop; - --maxops; - if (refop > maxops) - return 0; - } - else - return 0; - } - - /* Save the actual operand type for later use. */ - operands[op].type = OPTYPE (refoptype[refop]); - ++refop; - ++op; - /* Have we matched them all yet? */ - if (op == opcount) - { - while (op < maxops) - { - /* If a later operand is *not* optional, no match. */ - if ((refoptype[refop] & OPT) == 0) - return 0; - /* Flag any implicit default OP_DST operands so we know to add - them explicitly when encoding the operand later. */ - if (OPTYPE (refoptype[refop]) == OP_DST) - insn->using_default_dst = 1; - ++refop; - ++op; - } - - return 1; - } - } - - return 0; -} - -/* 16-bit direct memory address - Explicit dmad operands are always in last word of insn (usually second - word, but bumped to third if lk addressing is used) - - We allow *(dmad) notation because the TI assembler allows it. - - XPC_CODE: - 0 for 16-bit addresses - 1 for full 23-bit addresses - 2 for the upper 7 bits of a 23-bit address (LDX). */ - -static int -encode_dmad (insn, operand, xpc_code) - tic54x_insn *insn; - struct opstruct *operand; - int xpc_code; -{ - int op = 1 + insn->is_lkaddr; - - /* Only allow *(dmad) expressions; all others are invalid. */ - if (is_indirect (operand) && operand->buf[strlen (operand->buf) - 1] != ')') - { - as_bad (_("Invalid dmad syntax '%s'"), operand->buf); - return 0; - } - - insn->opcode[op].addr_expr = operand->exp; - - if (insn->opcode[op].addr_expr.X_op == O_constant) - { - valueT value = insn->opcode[op].addr_expr.X_add_number; - - if (xpc_code == 1) - { - insn->opcode[0].word &= 0xFF80; - insn->opcode[0].word |= (value >> 16) & 0x7F; - insn->opcode[1].word = value & 0xFFFF; - } - else if (xpc_code == 2) - insn->opcode[op].word = (value >> 16) & 0xFFFF; - else - insn->opcode[op].word = value; - } - else - { - /* Do the fixup later; just store the expression. */ - insn->opcode[op].word = 0; - insn->opcode[op].r_nchars = 2; - - if (amode == c_mode) - insn->opcode[op].r_type = BFD_RELOC_TIC54X_16_OF_23; - else if (xpc_code == 1) - { - /* This relocation spans two words, so adjust accordingly. */ - insn->opcode[0].addr_expr = operand->exp; - insn->opcode[0].r_type = BFD_RELOC_TIC54X_23; - insn->opcode[0].r_nchars = 4; - insn->opcode[0].unresolved = 1; - /* It's really 2 words, but we want to stop encoding after the - first, since we must encode both words at once. */ - insn->words = 1; - } - else if (xpc_code == 2) - insn->opcode[op].r_type = BFD_RELOC_TIC54X_MS7_OF_23; - else - insn->opcode[op].r_type = BFD_RELOC_TIC54X_16_OF_23; - - insn->opcode[op].unresolved = 1; - } - - return 1; -} - -/* 7-bit direct address encoding. */ - -static int -encode_address (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - /* Assumes that dma addresses are *always* in word 0 of the opcode. */ - insn->opcode[0].addr_expr = operand->exp; - - if (operand->exp.X_op == O_constant) - insn->opcode[0].word |= (operand->exp.X_add_number & 0x7F); - else - { - if (operand->exp.X_op == O_register) - as_bad (_("Use the .mmregs directive to use memory-mapped register names such as '%s'"), operand->buf); - /* Do the fixup later; just store the expression. */ - insn->opcode[0].r_nchars = 1; - insn->opcode[0].r_type = BFD_RELOC_TIC54X_PARTLS7; - insn->opcode[0].unresolved = 1; - } - - return 1; -} - -static int -encode_indirect (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - int arf; - int mod; - - if (insn->is_lkaddr) - { - /* lk addresses always go in the second insn word. */ - mod = ((TOUPPER (operand->buf[1]) == 'A') ? 12 : - (operand->buf[1] == '(') ? 15 : - (strchr (operand->buf, '%') != NULL) ? 14 : 13); - arf = ((mod == 12) ? operand->buf[3] - '0' : - (mod == 15) ? 0 : operand->buf[4] - '0'); - - insn->opcode[1].addr_expr = operand->exp; - - if (operand->exp.X_op == O_constant) - insn->opcode[1].word = operand->exp.X_add_number; - else - { - insn->opcode[1].word = 0; - insn->opcode[1].r_nchars = 2; - insn->opcode[1].r_type = BFD_RELOC_TIC54X_16_OF_23; - insn->opcode[1].unresolved = 1; - } - } - else if (strncasecmp (operand->buf, "*sp (", 4) == 0) - { - /* Stack offsets look the same as 7-bit direct addressing. */ - return encode_address (insn, operand); - } - else - { - arf = (TOUPPER (operand->buf[1]) == 'A' ? - operand->buf[3] : operand->buf[4]) - '0'; - - if (operand->buf[1] == '+') - { - mod = 3; /* *+ARx */ - if (insn->tm->flags & FL_SMR) - as_warn (_("Address mode *+ARx is write-only. " - "Results of reading are undefined.")); - } - else if (operand->buf[4] == '\0') - mod = 0; /* *ARx */ - else if (operand->buf[5] == '\0') - mod = (operand->buf[4] == '-' ? 1 : 2); /* *ARx+ / *ARx- */ - else if (operand->buf[6] == '\0') - { - if (operand->buf[5] == '0') - mod = (operand->buf[4] == '-' ? 5 : 6); /* *ARx+0 / *ARx-0 */ - else - mod = (operand->buf[4] == '-' ? 8 : 10);/* *ARx+% / *ARx-% */ - } - else if (TOUPPER (operand->buf[6]) == 'B') - mod = (operand->buf[4] == '-' ? 4 : 7); /* ARx+0B / *ARx-0B */ - else if (TOUPPER (operand->buf[6]) == '%') - mod = (operand->buf[4] == '-' ? 9 : 11); /* ARx+0% / *ARx - 0% */ - else - { - as_bad (_("Unrecognized indirect address format \"%s\""), - operand->buf); - return 0; - } - } - - insn->opcode[0].word |= 0x80 | (mod << 3) | arf; - - return 1; -} - -static int -encode_integer (insn, operand, which, min, max, mask) - tic54x_insn *insn; - struct opstruct *operand; - int which; - int min; - int max; - unsigned short mask; -{ - long parse, integer; - - insn->opcode[which].addr_expr = operand->exp; - - if (operand->exp.X_op == O_constant) - { - parse = operand->exp.X_add_number; - /* Hack -- fixup for 16-bit hex quantities that get converted positive - instead of negative. */ - if ((parse & 0x8000) && min == -32768 && max == 32767) - integer = (short) parse; - else - integer = parse; - - if (integer >= min && integer <= max) - { - insn->opcode[which].word |= (integer & mask); - return 1; - } - as_bad (_("Operand '%s' out of range (%d <= x <= %d)"), - operand->buf, min, max); - } - else - { - if (insn->opcode[which].addr_expr.X_op == O_constant) - { - insn->opcode[which].word |= - insn->opcode[which].addr_expr.X_add_number & mask; - } - else - { - /* Do the fixup later; just store the expression. */ - bfd_reloc_code_real_type rtype = - (mask == 0x1FF ? BFD_RELOC_TIC54X_PARTMS9 : - mask == 0xFFFF ? BFD_RELOC_TIC54X_16_OF_23 : - mask == 0x7F ? BFD_RELOC_TIC54X_PARTLS7 : BFD_RELOC_8); - int size = (mask == 0x1FF || mask == 0xFFFF) ? 2 : 1; - - if (rtype == BFD_RELOC_8) - as_bad (_("Error in relocation handling")); - - insn->opcode[which].r_nchars = size; - insn->opcode[which].r_type = rtype; - insn->opcode[which].unresolved = 1; - } - - return 1; - } - - return 0; -} - -static int -encode_condition (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - symbol *cc = (symbol *) hash_find (cc_hash, operand->buf); - if (!cc) - { - as_bad (_("Unrecognized condition code \"%s\""), operand->buf); - return 0; - } -#define CC_GROUP 0x40 -#define CC_ACC 0x08 -#define CATG_A1 0x07 -#define CATG_B1 0x30 -#define CATG_A2 0x30 -#define CATG_B2 0x0C -#define CATG_C2 0x03 - /* Disallow group 1 conditions mixed with group 2 conditions - if group 1, allow only one category A and one category B - if group 2, allow only one each of category A, B, and C. */ - if (((insn->opcode[0].word & 0xFF) != 0)) - { - if ((insn->opcode[0].word & CC_GROUP) != (cc->value & CC_GROUP)) - { - as_bad (_("Condition \"%s\" does not match preceding group"), - operand->buf); - return 0; - } - if (insn->opcode[0].word & CC_GROUP) - { - if ((insn->opcode[0].word & CC_ACC) != (cc->value & CC_ACC)) - { - as_bad (_("Condition \"%s\" uses a different accumulator from " - "a preceding condition"), - operand->buf); - return 0; - } - if ((insn->opcode[0].word & CATG_A1) && (cc->value & CATG_A1)) - { - as_bad (_("Only one comparison conditional allowed")); - return 0; - } - if ((insn->opcode[0].word & CATG_B1) && (cc->value & CATG_B1)) - { - as_bad (_("Only one overflow conditional allowed")); - return 0; - } - } - else if ( ((insn->opcode[0].word & CATG_A2) && (cc->value & CATG_A2)) - || ((insn->opcode[0].word & CATG_B2) && (cc->value & CATG_B2)) - || ((insn->opcode[0].word & CATG_C2) && (cc->value & CATG_C2))) - { - as_bad (_("Duplicate %s conditional"), operand->buf); - return 0; - } - } - - insn->opcode[0].word |= cc->value; - return 1; -} - -static int -encode_cc3 (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - symbol *cc3 = (symbol *) hash_find (cc3_hash, operand->buf); - int value = cc3 ? cc3->value : operand->exp.X_add_number << 8; - - if ((value & 0x0300) != value) - { - as_bad (_("Unrecognized condition code \"%s\""), operand->buf); - return 0; - } - insn->opcode[0].word |= value; - return 1; -} - -static int -encode_arx (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - int arf = strlen (operand->buf) >= 3 ? operand->buf[2] - '0' : -1; - - if (strncasecmp ("ar", operand->buf, 2) || arf < 0 || arf > 7) - { - as_bad (_("Invalid auxiliary register (use AR0-AR7)")); - return 0; - } - insn->opcode[0].word |= arf; - return 1; -} - -static int -encode_cc2 (insn, operand) - tic54x_insn *insn; - struct opstruct *operand; -{ - symbol *cc2 = (symbol *) hash_find (cc2_hash, operand->buf); - - if (!cc2) - { - as_bad (_("Unrecognized condition code \"%s\""), operand->buf); - return 0; - } - insn->opcode[0].word |= cc2->value; - return 1; -} - -static int -encode_operand (insn, type, operand) - tic54x_insn *insn; - enum optype type; - struct opstruct *operand; -{ - int ext = (insn->tm->flags & FL_EXT) != 0; - - if (type == OP_MMR && operand->exp.X_op != O_constant) - { - /* Disallow long-constant addressing for memory-mapped addressing. */ - if (insn->is_lkaddr) - { - as_bad (_("lk addressing modes are invalid for memory-mapped " - "register addressing")); - return 0; - } - type = OP_Smem; - /* Warn about *+ARx when used with MMR operands. */ - if (strncasecmp (operand->buf, "*+ar", 4) == 0) - { - as_warn (_("Address mode *+ARx is not allowed in memory-mapped " - "register addressing. Resulting behavior is " - "undefined.")); - } - } - - switch (type) - { - case OP_None: - return 1; - case OP_dmad: - /* 16-bit immediate value. */ - return encode_dmad (insn, operand, 0); - case OP_SRC: - if (TOUPPER (*operand->buf) == 'B') - { - insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 9); - if (insn->using_default_dst) - insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 8); - } - return 1; - case OP_RND: - /* Make sure this agrees with the OP_DST operand. */ - if (!((TOUPPER (operand->buf[0]) == 'B') ^ - ((insn->opcode[0].word & (1 << 8)) != 0))) - { - as_bad (_("Destination accumulator for each part of this parallel " - "instruction must be different")); - return 0; - } - return 1; - case OP_SRC1: - case OP_DST: - if (TOUPPER (operand->buf[0]) == 'B') - insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 8); - return 1; - case OP_Xmem: - case OP_Ymem: - { - int mod = (operand->buf[4] == '\0' ? 0 : /* *arx */ - operand->buf[4] == '-' ? 1 : /* *arx- */ - operand->buf[5] == '\0' ? 2 : 3); /* *arx+, *arx+0% */ - int arf = operand->buf[3] - '0' - 2; - int code = (mod << 2) | arf; - insn->opcode[0].word |= (code << (type == OP_Xmem ? 4 : 0)); - return 1; - } - case OP_Lmem: - case OP_Smem: - if (!is_indirect (operand)) - return encode_address (insn, operand); - /* Fall through. */ - case OP_Sind: - return encode_indirect (insn, operand); - case OP_xpmad_ms7: - return encode_dmad (insn, operand, 2); - case OP_xpmad: - return encode_dmad (insn, operand, 1); - case OP_PA: - case OP_pmad: - return encode_dmad (insn, operand, 0); - case OP_ARX: - return encode_arx (insn, operand); - case OP_MMRX: - case OP_MMRY: - case OP_MMR: - { - int value = operand->exp.X_add_number; - - if (type == OP_MMR) - insn->opcode[0].word |= value; - else - { - if (value < 16 || value > 24) - { - as_bad (_("Memory mapped register \"%s\" out of range"), - operand->buf); - return 0; - } - if (type == OP_MMRX) - insn->opcode[0].word |= (value - 16) << 4; - else - insn->opcode[0].word |= (value - 16); - } - return 1; - } - case OP_B: - case OP_A: - return 1; - case OP_SHFT: - return encode_integer (insn, operand, ext + insn->is_lkaddr, - 0, 15, 0xF); - case OP_SHIFT: - return encode_integer (insn, operand, ext + insn->is_lkaddr, - -16, 15, 0x1F); - case OP_lk: - return encode_integer (insn, operand, 1 + insn->is_lkaddr, - -32768, 32767, 0xFFFF); - case OP_CC: - return encode_condition (insn, operand); - case OP_CC2: - return encode_cc2 (insn, operand); - case OP_CC3: - return encode_cc3 (insn, operand); - case OP_BITC: - return encode_integer (insn, operand, 0, 0, 15, 0xF); - case OP_k8: - return encode_integer (insn, operand, 0, -128, 127, 0xFF); - case OP_123: - { - int value = operand->exp.X_add_number; - int code; - if (value < 1 || value > 3) - { - as_bad (_("Invalid operand (use 1, 2, or 3)")); - return 0; - } - code = value == 1 ? 0 : value == 2 ? 0x2 : 0x1; - insn->opcode[0].word |= (code << 8); - return 1; - } - case OP_031: - return encode_integer (insn, operand, 0, 0, 31, 0x1F); - case OP_k8u: - return encode_integer (insn, operand, 0, 0, 255, 0xFF); - case OP_lku: - return encode_integer (insn, operand, 1 + insn->is_lkaddr, - 0, 65535, 0xFFFF); - case OP_SBIT: - { - symbol *sbit = (symbol *) hash_find (sbit_hash, operand->buf); - int value = is_absolute (operand) ? - operand->exp.X_add_number : (sbit ? sbit->value : -1); - int reg = 0; - - if (insn->opcount == 1) - { - if (!sbit) - { - as_bad (_("A status register or status bit name is required")); - return 0; - } - /* Guess the register based on the status bit; "ovb" is the last - status bit defined for st0. */ - if (sbit > (symbol *) hash_find (sbit_hash, "ovb")) - reg = 1; - } - if (value == -1) - { - as_bad (_("Unrecognized status bit \"%s\""), operand->buf); - return 0; - } - insn->opcode[0].word |= value; - insn->opcode[0].word |= (reg << 9); - return 1; - } - case OP_N: - if (strcasecmp (operand->buf, "st0") == 0 - || strcasecmp (operand->buf, "st1") == 0) - { - insn->opcode[0].word |= - ((unsigned short) (operand->buf[2] - '0')) << 9; - return 1; - } - else if (operand->exp.X_op == O_constant - && (operand->exp.X_add_number == 0 - || operand->exp.X_add_number == 1)) - { - insn->opcode[0].word |= - ((unsigned short) (operand->exp.X_add_number)) << 9; - return 1; - } - as_bad (_("Invalid status register \"%s\""), operand->buf); - return 0; - case OP_k5: - return encode_integer (insn, operand, 0, -16, 15, 0x1F); - case OP_k3: - return encode_integer (insn, operand, 0, 0, 7, 0x7); - case OP_k9: - return encode_integer (insn, operand, 0, 0, 0x1FF, 0x1FF); - case OP_12: - if (operand->exp.X_add_number != 1 - && operand->exp.X_add_number != 2) - { - as_bad (_("Operand \"%s\" out of range (use 1 or 2)"), operand->buf); - return 0; - } - insn->opcode[0].word |= (operand->exp.X_add_number - 1) << 9; - return 1; - case OP_16: - case OP_T: - case OP_TS: - case OP_ASM: - case OP_TRN: - case OP_DP: - case OP_ARP: - /* No encoding necessary. */ - return 1; - default: - return 0; - } - - return 1; -} - -static void -emit_insn (insn) - tic54x_insn *insn; -{ - int i; - flagword oldflags = bfd_get_section_flags (stdoutput, now_seg); - flagword flags = oldflags | SEC_CODE; - - if (! bfd_set_section_flags (stdoutput, now_seg, flags)) - as_warn (_("error setting flags for \"%s\": %s"), - bfd_section_name (stdoutput, now_seg), - bfd_errmsg (bfd_get_error ())); - - for (i = 0; i < insn->words; i++) - { - int size = (insn->opcode[i].unresolved - && insn->opcode[i].r_type == BFD_RELOC_TIC54X_23) ? 4 : 2; - char *p = frag_more (size); - - if (size == 2) - md_number_to_chars (p, (valueT) insn->opcode[i].word, 2); - else - md_number_to_chars (p, (valueT) insn->opcode[i].word << 16, 4); - - if (insn->opcode[i].unresolved) - fix_new_exp (frag_now, p - frag_now->fr_literal, - insn->opcode[i].r_nchars, &insn->opcode[i].addr_expr, - FALSE, insn->opcode[i].r_type); - } -} - -/* Convert the operand strings into appropriate opcode values - return the total number of words used by the instruction. */ - -static int -build_insn (insn) - tic54x_insn *insn; -{ - int i; - - /* Only non-parallel instructions support lk addressing. */ - if (!(insn->tm->flags & FL_PAR)) - { - for (i = 0; i < insn->opcount; i++) - { - if ((OPTYPE (insn->operands[i].type) == OP_Smem - || OPTYPE (insn->operands[i].type) == OP_Lmem - || OPTYPE (insn->operands[i].type) == OP_Sind) - && strchr (insn->operands[i].buf, '(') - /* Don't mistake stack-relative addressing for lk addressing. */ - && strncasecmp (insn->operands[i].buf, "*sp (", 4) != 0) - { - insn->is_lkaddr = 1; - insn->lkoperand = i; - break; - } - } - } - insn->words = insn->tm->words + insn->is_lkaddr; - - insn->opcode[0].word = insn->tm->opcode; - if (insn->tm->flags & FL_EXT) - insn->opcode[1 + insn->is_lkaddr].word = insn->tm->opcode2; - - for (i = 0; i < insn->opcount; i++) - { - enum optype type = insn->operands[i].type; - - if (!encode_operand (insn, type, &insn->operands[i])) - return 0; - } - if (insn->tm->flags & FL_PAR) - for (i = 0; i < insn->paropcount; i++) - { - enum optype partype = insn->paroperands[i].type; - - if (!encode_operand (insn, partype, &insn->paroperands[i])) - return 0; - } - - emit_insn (insn); - - return insn->words; -} - -static int -optimize_insn (insn) - tic54x_insn *insn; -{ - /* Optimize some instructions, helping out the brain-dead programmer. */ -#define is_zero(op) ((op).exp.X_op == O_constant && (op).exp.X_add_number == 0) - if (strcasecmp (insn->tm->name, "add") == 0) - { - if (insn->opcount > 1 - && is_accumulator (&insn->operands[insn->opcount - 2]) - && is_accumulator (&insn->operands[insn->opcount - 1]) - && strcasecmp (insn->operands[insn->opcount - 2].buf, - insn->operands[insn->opcount - 1].buf) == 0) - { - --insn->opcount; - insn->using_default_dst = 1; - return 1; - } - - /* Try to collapse if Xmem and shift count is zero. */ - if ((OPTYPE (insn->tm->operand_types[0]) == OP_Xmem - && OPTYPE (insn->tm->operand_types[1]) == OP_SHFT - && is_zero (insn->operands[1])) - /* Or if Smem, shift is zero or absent, and SRC == DST. */ - || (OPTYPE (insn->tm->operand_types[0]) == OP_Smem - && OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT - && is_type (&insn->operands[1], OP_SHIFT) - && is_zero (insn->operands[1]) && insn->opcount == 3)) - { - insn->operands[1] = insn->operands[2]; - insn->opcount = 2; - return 1; - } - } - else if (strcasecmp (insn->tm->name, "ld") == 0) - { - if (insn->opcount == 3 && insn->operands[0].type != OP_SRC) - { - if ((OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT - || OPTYPE (insn->tm->operand_types[1]) == OP_SHFT) - && is_zero (insn->operands[1]) - && (OPTYPE (insn->tm->operand_types[0]) != OP_lk - || (insn->operands[0].exp.X_op == O_constant - && insn->operands[0].exp.X_add_number <= 255 - && insn->operands[0].exp.X_add_number >= 0))) - { - insn->operands[1] = insn->operands[2]; - insn->opcount = 2; - return 1; - } - } - } - else if (strcasecmp (insn->tm->name, "sth") == 0 - || strcasecmp (insn->tm->name, "stl") == 0) - { - if ((OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT - || OPTYPE (insn->tm->operand_types[1]) == OP_SHFT) - && is_zero (insn->operands[1])) - { - insn->operands[1] = insn->operands[2]; - insn->opcount = 2; - return 1; - } - } - else if (strcasecmp (insn->tm->name, "sub") == 0) - { - if (insn->opcount > 1 - && is_accumulator (&insn->operands[insn->opcount - 2]) - && is_accumulator (&insn->operands[insn->opcount - 1]) - && strcasecmp (insn->operands[insn->opcount - 2].buf, - insn->operands[insn->opcount - 1].buf) == 0) - { - --insn->opcount; - insn->using_default_dst = 1; - return 1; - } - - if ( ((OPTYPE (insn->tm->operand_types[0]) == OP_Smem - && OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT) - || (OPTYPE (insn->tm->operand_types[0]) == OP_Xmem - && OPTYPE (insn->tm->operand_types[1]) == OP_SHFT)) - && is_zero (insn->operands[1]) - && insn->opcount == 3) - { - insn->operands[1] = insn->operands[2]; - insn->opcount = 2; - return 1; - } - } - return 0; -} - -/* Find a matching template if possible, and get the operand strings. */ - -static int -tic54x_parse_insn (insn, line) - tic54x_insn *insn; - char *line; -{ - insn->tm = (template *) hash_find (op_hash, insn->mnemonic); - if (!insn->tm) - { - as_bad (_("Unrecognized instruction \"%s\""), insn->mnemonic); - return 0; - } - - insn->opcount = get_operands (insn->operands, line); - if (insn->opcount < 0) - return 0; - - /* Check each variation of operands for this mnemonic. */ - while (insn->tm->name && strcasecmp (insn->tm->name, insn->mnemonic) == 0) - { - if (insn->opcount >= insn->tm->minops - && insn->opcount <= insn->tm->maxops - && operands_match (insn, &insn->operands[0], insn->opcount, - insn->tm->operand_types, - insn->tm->minops, insn->tm->maxops)) - { - /* SUCCESS! now try some optimizations. */ - if (optimize_insn (insn)) - { - insn->tm = (template *) hash_find (op_hash, - insn->mnemonic); - continue; - } - - return 1; - } - ++(insn->tm); - } - as_bad (_("Unrecognized operand list '%s' for instruction '%s'"), - line, insn->mnemonic); - return 0; -} - -/* We set this in start_line_hook, 'cause if we do a line replacement, we - won't be able to see the next line. */ -static int parallel_on_next_line_hint = 0; - -/* See if this is part of a parallel instruction - Look for a subsequent line starting with "||". */ - -static int -next_line_shows_parallel (next_line) - char *next_line; -{ - /* Look for the second half. */ - while (ISSPACE (*next_line)) - ++next_line; - - return (next_line[0] == PARALLEL_SEPARATOR - && next_line[1] == PARALLEL_SEPARATOR); -} - -static int -tic54x_parse_parallel_insn_firstline (insn, line) - tic54x_insn *insn; - char *line; -{ - insn->tm = (template *) hash_find (parop_hash, insn->mnemonic); - if (!insn->tm) - { - as_bad (_("Unrecognized parallel instruction \"%s\""), - insn->mnemonic); - return 0; - } - - while (insn->tm->name && strcasecmp (insn->tm->name, - insn->mnemonic) == 0) - { - insn->opcount = get_operands (insn->operands, line); - if (insn->opcount < 0) - return 0; - if (insn->opcount == 2 - && operands_match (insn, &insn->operands[0], insn->opcount, - insn->tm->operand_types, 2, 2)) - { - return 1; - } - ++(insn->tm); - } - /* Didn't find a matching parallel; try for a normal insn. */ - return 0; -} - -/* Parse the second line of a two-line parallel instruction. */ - -static int -tic54x_parse_parallel_insn_lastline (insn, line) - tic54x_insn *insn; - char *line; -{ - int valid_mnemonic = 0; - - insn->paropcount = get_operands (insn->paroperands, line); - while (insn->tm->name && strcasecmp (insn->tm->name, - insn->mnemonic) == 0) - { - if (strcasecmp (insn->tm->parname, insn->parmnemonic) == 0) - { - valid_mnemonic = 1; - - if (insn->paropcount >= insn->tm->minops - && insn->paropcount <= insn->tm->maxops - && operands_match (insn, insn->paroperands, - insn->paropcount, - insn->tm->paroperand_types, - insn->tm->minops, insn->tm->maxops)) - return 1; - } - ++(insn->tm); - } - if (valid_mnemonic) - as_bad (_("Invalid operand (s) for parallel instruction \"%s\""), - insn->parmnemonic); - else - as_bad (_("Unrecognized parallel instruction combination \"%s || %s\""), - insn->mnemonic, insn->parmnemonic); - - return 0; -} - -/* If quotes found, return copy of line up to closing quote; - otherwise up until terminator. - If it's a string, pass as-is; otherwise attempt substitution symbol - replacement on the value. */ - -static char * -subsym_get_arg (line, terminators, str, nosub) - char *line; - char *terminators; - char **str; - int nosub; -{ - char *ptr = line; - char *endp; - int is_string = *line == '"'; - int is_char = ISDIGIT (*line); - - if (is_char) - { - while (ISDIGIT (*ptr)) - ++ptr; - endp = ptr; - *str = xmalloc (ptr - line + 1); - strncpy (*str, line, ptr - line); - (*str)[ptr - line] = 0; - } - else if (is_string) - { - char *savedp = input_line_pointer; - int len; - - input_line_pointer = ptr; - *str = demand_copy_C_string (&len); - endp = input_line_pointer; - input_line_pointer = savedp; - - /* Do forced substitutions if requested. */ - if (!nosub && **str == ':') - *str = subsym_substitute (*str, 1); - } - else - { - char *term = terminators; - char *value = NULL; - - while (*ptr && *ptr != *term) - { - if (!*term) - { - term = terminators; - ++ptr; - } - else - ++term; - } - endp = ptr; - *str = xmalloc (ptr - line + 1); - strncpy (*str, line, ptr - line); - (*str)[ptr - line] = 0; - /* Do simple substitution, if available. */ - if (!nosub && (value = subsym_lookup (*str, macro_level)) != NULL) - *str = value; - } - - return endp; -} - -/* Replace the given substitution string. - We start at the innermost macro level, so that existing locals remain local - Note: we're treating macro args identically to .var's; I don't know if - that's compatible w/TI's assembler. */ - -static void -subsym_create_or_replace (name, value) - char *name; - char *value; -{ - int i; - - for (i = macro_level; i > 0; i--) - { - if (hash_find (subsym_hash[i], name)) - { - hash_replace (subsym_hash[i], name, value); - return; - } - } - if (hash_find (subsym_hash[0], name)) - hash_replace (subsym_hash[0], name, value); - else - hash_insert (subsym_hash[0], name, value); -} - -/* Look up the substitution string replacement for the given symbol. - Start with the innermost macro substitution table given and work - outwards. */ - -static char * -subsym_lookup (name, nest_level) - char *name; - int nest_level; -{ - char *value = hash_find (subsym_hash[nest_level], name); - - if (value || nest_level == 0) - return value; - - return subsym_lookup (name, nest_level - 1); -} - -/* Do substitution-symbol replacement on the given line (recursively). - return the argument if no substitution was done - - Also look for built-in functions ($func (arg)) and local labels. - - If FORCED is set, look for forced substitutions of the form ':SYMBOL:'. */ - -static char * -subsym_substitute (line, forced) - char * line; - int forced; -{ - /* For each apparent symbol, see if it's a substitution symbol, and if so, - replace it in the input. */ - char *replacement; /* current replacement for LINE. */ - char *head; /* Start of line. */ - char *ptr; /* Current examination point. */ - int changed = 0; /* Did we make a substitution? */ - int eval_line = 0; /* Is this line a .eval/.asg statement? */ - int eval_symbol = 0; /* Are we in the middle of the symbol for - .eval/.asg? */ - char *eval_end = NULL; - int recurse = 1; - int line_conditional = 0; - char *tmp; - - /* Work with a copy of the input line. */ - replacement = xmalloc (strlen (line) + 1); - strcpy (replacement, line); - - ptr = head = replacement; - - /* Flag lines where we might need to replace a single '=' with two; - GAS uses single '=' to assign macro args values, and possibly other - places, so limit what we replace. */ - if (strstr (line, ".if") - || strstr (line, ".elseif") - || strstr (line, ".break")) - line_conditional = 1; - - /* Watch out for .eval, so that we avoid doing substitution on the - symbol being assigned a value. */ - if (strstr (line, ".eval") || strstr (line, ".asg")) - eval_line = 1; - - /* If it's a macro definition, don't do substitution on the argument - names. */ - if (strstr (line, ".macro")) - return line; - - while (!is_end_of_line[(int) *ptr]) - { - int current_char = *ptr; - - /* Need to update this since LINE may have been modified. */ - if (eval_line) - eval_end = strrchr (ptr, ','); - - /* Replace triple double quotes with bounding quote/escapes. */ - if (current_char == '"' && ptr[1] == '"' && ptr[2] == '"') - { - ptr[1] = '\\'; - tmp = strstr (ptr + 2, "\"\"\""); - if (tmp) - tmp[0] = '\\'; - changed = 1; - } - - /* Replace a single '=' with a '=='; - for compatibility with older code only. */ - if (line_conditional && current_char == '=') - { - if (ptr[1] == '=') - { - ptr += 2; - continue; - } - *ptr++ = '\0'; - tmp = xmalloc (strlen (head) + 2 + strlen (ptr) + 1); - sprintf (tmp, "%s==%s", head, ptr); - /* Continue examining after the '=='. */ - ptr = tmp + strlen (head) + 2; - free (replacement); - head = replacement = tmp; - changed = 1; - } - - /* Flag when we've reached the symbol part of .eval/.asg. */ - if (eval_line && ptr >= eval_end) - eval_symbol = 1; - - /* For each apparent symbol, see if it's a substitution symbol, and if - so, replace it in the input. */ - if ((forced && current_char == ':') - || (!forced && is_name_beginner (current_char))) - { - char *name; /* Symbol to be replaced. */ - char *savedp = input_line_pointer; - int c; - char *value = NULL; - char *tail; /* Rest of line after symbol. */ - - /* Skip the colon. */ - if (forced) - ++ptr; - - name = input_line_pointer = ptr; - c = get_symbol_end (); - /* '?' is not normally part of a symbol, but it IS part of a local - label. */ - if (c == '?') - { - *input_line_pointer++ = c; - c = *input_line_pointer; - *input_line_pointer = '\0'; - } - /* Avoid infinite recursion; if a symbol shows up a second time for - substitution, leave it as is. */ - if (hash_find (subsym_recurse_hash, name) == NULL) - value = subsym_lookup (name, macro_level); - else - as_warn (_("%s symbol recursion stopped at " - "second appearance of '%s'"), - forced ? "Forced substitution" : "Substitution", name); - ptr = tail = input_line_pointer; - input_line_pointer = savedp; - - /* Check for local labels; replace them with the appropriate - substitution. */ - if ((*name == '$' && ISDIGIT (name[1]) && name[2] == '\0') - || name[strlen (name) - 1] == '?') - { - /* Use an existing identifier for that label if, available, or - create a new, unique identifier. */ - value = hash_find (local_label_hash[macro_level], name); - if (value == NULL) - { - char digit[11]; - char *namecopy = strcpy (xmalloc (strlen (name) + 1), name); - - value = strcpy (xmalloc (strlen (name) + sizeof (digit) + 1), - name); - if (*value != '$') - value[strlen (value) - 1] = '\0'; - sprintf (digit, ".%d", local_label_id++); - strcat (value, digit); - hash_insert (local_label_hash[macro_level], namecopy, value); - } - /* Indicate where to continue looking for substitutions. */ - ptr = tail; - } - /* Check for built-in subsym and math functions. */ - else if (value != NULL && *name == '$') - { - subsym_proc_entry *entry = (subsym_proc_entry *) value; - math_proc_entry *math_entry = hash_find (math_hash, name); - char *arg1, *arg2 = NULL; - - *ptr = c; - if (entry == NULL) - { - as_bad (_("Unrecognized substitution symbol function")); - break; - } - else if (*ptr != '(') - { - as_bad (_("Missing '(' after substitution symbol function")); - break; - } - ++ptr; - if (math_entry != NULL) - { - float arg1, arg2 = 0; - volatile float fresult; - - arg1 = (float) strtod (ptr, &ptr); - if (math_entry->nargs == 2) - { - if (*ptr++ != ',') - { - as_bad (_("Expecting second argument")); - break; - } - arg2 = (float) strtod (ptr, &ptr); - } - fresult = (*math_entry->proc) (arg1, arg2); - value = xmalloc (128); - if (math_entry->int_return) - sprintf (value, "%d", (int) fresult); - else - sprintf (value, "%f", fresult); - if (*ptr++ != ')') - { - as_bad (_("Extra junk in function call, expecting ')'")); - break; - } - /* Don't bother recursing; the replacement isn't a - symbol. */ - recurse = 0; - } - else - { - int val; - int arg_type[2] = { *ptr == '"' , 0 }; - int ismember = !strcmp (entry->name, "$ismember"); - - /* Parse one or two args, which must be a substitution - symbol, string or a character-string constant. */ - /* For all functions, a string or substitution symbol may be - used, with the following exceptions: - firstch/lastch: 2nd arg must be character constant - ismember: both args must be substitution symbols. */ - ptr = subsym_get_arg (ptr, ",)", &arg1, ismember); - if (!arg1) - break; - if (entry->nargs == 2) - { - if (*ptr++ != ',') - { - as_bad (_("Function expects two arguments")); - break; - } - /* Character constants are converted to numerics - by the preprocessor. */ - arg_type[1] = (ISDIGIT (*ptr)) ? 2 : (*ptr == '"'); - ptr = subsym_get_arg (ptr, ")", &arg2, ismember); - } - /* Args checking. */ - if ((!strcmp (entry->name, "$firstch") - || !strcmp (entry->name, "$lastch")) - && arg_type[1] != 2) - { - as_bad (_("Expecting character constant argument")); - break; - } - if (ismember - && (arg_type[0] != 0 || arg_type[1] != 0)) - { - as_bad (_("Both arguments must be substitution symbols")); - break; - } - if (*ptr++ != ')') - { - as_bad (_("Extra junk in function call, expecting ')'")); - break; - } - val = (*entry->proc) (arg1, arg2); - value = xmalloc (64); - sprintf (value, "%d", val); - } - /* Fix things up to replace the entire expression, not just the - function name. */ - tail = ptr; - c = *tail; - } - - if (value != NULL && !eval_symbol) - { - /* Replace the symbol with its string replacement and - continue. Recursively replace VALUE until either no - substitutions are performed, or a substitution that has been - previously made is encountered again. - - put the symbol into the recursion hash table so we only - try to replace a symbol once. */ - if (recurse) - { - hash_insert (subsym_recurse_hash, name, name); - value = subsym_substitute (value, macro_level > 0); - hash_delete (subsym_recurse_hash, name); - } - - /* Temporarily zero-terminate where the symbol started. */ - *name = 0; - if (forced) - { - if (c == '(') - { - /* Subscripted substitution symbol -- use just the - indicated portion of the string; the description - kinda indicates that forced substitution is not - supposed to be recursive, but I'm not sure. */ - unsigned beg, len = 1; /* default to a single char */ - char *newval = strcpy (xmalloc (strlen (value) + 1), - value); - - savedp = input_line_pointer; - input_line_pointer = tail + 1; - beg = get_absolute_expression (); - if (beg < 1) - { - as_bad (_("Invalid subscript (use 1 to %d)"), - (int) strlen (value)); - break; - } - if (*input_line_pointer == ',') - { - ++input_line_pointer; - len = get_absolute_expression (); - if (beg + len > strlen (value)) - { - as_bad (_("Invalid length (use 0 to %d"), - (int) strlen (value) - beg); - break; - } - } - newval += beg - 1; - newval[len] = 0; - tail = input_line_pointer; - if (*tail++ != ')') - { - as_bad (_("Missing ')' in subscripted substitution " - "symbol expression")); - break; - } - c = *tail; - input_line_pointer = savedp; - - value = newval; - } - name[-1] = 0; - } - tmp = xmalloc (strlen (head) + strlen (value) + - strlen (tail + 1) + 2); - strcpy (tmp, head); - strcat (tmp, value); - /* Make sure forced substitutions are properly terminated. */ - if (forced) - { - if (c != ':') - { - as_bad (_("Missing forced substitution terminator ':'")); - break; - } - ++tail; - } - else - /* Restore the character after the symbol end. */ - *tail = c; - strcat (tmp, tail); - /* Continue examining after the replacement value. */ - ptr = tmp + strlen (head) + strlen (value); - free (replacement); - head = replacement = tmp; - changed = 1; - } - else - *ptr = c; - } - else - { - ++ptr; - } - } - - if (changed) - return replacement; - else - return line; -} - -/* We use this to handle substitution symbols - hijack input_line_pointer, replacing it with our substituted string. - - .sslist should enable listing the line after replacements are made... - - returns the new buffer limit. */ - -void -tic54x_start_line_hook () -{ - char *line, *endp; - char *replacement = NULL; - - /* Work with a copy of the input line, including EOL char. */ - endp = input_line_pointer; - while (!is_end_of_line[(int) *endp++]) - ; - line = xmalloc (endp - input_line_pointer + 1); - strncpy (line, input_line_pointer, endp - input_line_pointer + 1); - line[endp - input_line_pointer] = 0; - - /* Scan ahead for parallel insns. */ - parallel_on_next_line_hint = next_line_shows_parallel (endp + 1); - - /* If within a macro, first process forced replacements. */ - if (macro_level > 0) - replacement = subsym_substitute (line, 1); - else - replacement = line; - replacement = subsym_substitute (replacement, 0); - - if (replacement != line) - { - char *tmp = replacement; - char *comment = strchr (replacement, ';'); - char endc = replacement[strlen (replacement) - 1]; - - /* Clean up the replacement; we'd prefer to have this done by the - standard preprocessing equipment (maybe do_scrub_chars?) - but for now, do a quick-and-dirty. */ - if (comment != NULL) - { - comment[0] = endc; - comment[1] = 0; - --comment; - } - else - comment = replacement + strlen (replacement) - 1; - - /* Trim trailing whitespace. */ - while (ISSPACE (*comment)) - { - comment[0] = endc; - comment[1] = 0; - --comment; - } - - /* Compact leading whitespace. */ - while (ISSPACE (tmp[0]) && ISSPACE (tmp[1])) - ++tmp; - - input_line_pointer = endp; - input_scrub_insert_line (tmp); - free (replacement); - free (line); - /* Keep track of whether we've done a substitution. */ - substitution_line = 1; - } - else - { - /* No change. */ - free (line); - substitution_line = 0; - } -} - -/* This is the guts of the machine-dependent assembler. STR points to a - machine dependent instruction. This function is supposed to emit - the frags/bytes it assembles to. */ -void -md_assemble (line) - char *line; -{ - static int repeat_slot = 0; - static int delay_slots = 0; /* How many delay slots left to fill? */ - static int is_parallel = 0; - static tic54x_insn insn; - char *lptr; - char *savedp = input_line_pointer; - int c; - - input_line_pointer = line; - c = get_symbol_end (); - - if (cpu == VNONE) - cpu = V542; - if (address_mode_needs_set) - { - set_address_mode (amode); - address_mode_needs_set = 0; - } - if (cpu_needs_set) - { - set_cpu (cpu); - cpu_needs_set = 0; - } - assembly_begun = 1; - - if (is_parallel) - { - is_parallel = 0; - - strcpy (insn.parmnemonic, line); - lptr = input_line_pointer; - *lptr = c; - input_line_pointer = savedp; - - if (tic54x_parse_parallel_insn_lastline (&insn, lptr)) - { - int words = build_insn (&insn); - - if (delay_slots != 0) - { - if (words > delay_slots) - { - as_bad (_("Instruction does not fit in available delay " - "slots (%d-word insn, %d slots left)"), - words, delay_slots); - delay_slots = 0; - return; - } - delay_slots -= words; - } - } - return; - } - - memset (&insn, 0, sizeof (insn)); - strcpy (insn.mnemonic, line); - lptr = input_line_pointer; - *lptr = c; - input_line_pointer = savedp; - - /* See if this line is part of a parallel instruction; if so, either this - line or the next line will have the "||" specifier preceding the - mnemonic, and we look for it in the parallel insn hash table. */ - if (strstr (line, "||") != NULL || parallel_on_next_line_hint) - { - char *tmp = strstr (line, "||"); - if (tmp != NULL) - *tmp = '\0'; - - if (tic54x_parse_parallel_insn_firstline (&insn, lptr)) - { - is_parallel = 1; - /* If the parallel part is on the same line, process it now, - otherwise let the assembler pick up the next line for us. */ - if (tmp != NULL) - { - while (ISSPACE (tmp[2])) - ++tmp; - md_assemble (tmp + 2); - } - } - else - { - as_bad (_("Unrecognized parallel instruction '%s'"), line); - } - return; - } - - if (tic54x_parse_insn (&insn, lptr)) - { - int words; - - if ((insn.tm->flags & FL_LP) - && cpu != V545LP && cpu != V546LP) - { - as_bad (_("Instruction '%s' requires an LP cpu version"), - insn.tm->name); - return; - } - if ((insn.tm->flags & FL_FAR) - && amode != far_mode) - { - as_bad (_("Instruction '%s' requires far mode addressing"), - insn.tm->name); - return; - } - - words = build_insn (&insn); - - /* Is this instruction in a delay slot? */ - if (delay_slots) - { - if (words > delay_slots) - { - as_warn (_("Instruction does not fit in available delay " - "slots (%d-word insn, %d slots left). " - "Resulting behavior is undefined."), - words, delay_slots); - delay_slots = 0; - return; - } - /* Branches in delay slots are not allowed. */ - if (insn.tm->flags & FL_BMASK) - { - as_warn (_("Instructions which cause PC discontinuity are not " - "allowed in a delay slot. " - "Resulting behavior is undefined.")); - } - delay_slots -= words; - } - - /* Is this instruction the target of a repeat? */ - if (repeat_slot) - { - if (insn.tm->flags & FL_NR) - as_warn (_("'%s' is not repeatable. " - "Resulting behavior is undefined."), - insn.tm->name); - else if (insn.is_lkaddr) - as_warn (_("Instructions using long offset modifiers or absolute " - "addresses are not repeatable. " - "Resulting behavior is undefined.")); - repeat_slot = 0; - } - - /* Make sure we check the target of a repeat instruction. */ - if (insn.tm->flags & B_REPEAT) - { - repeat_slot = 1; - /* FIXME -- warn if repeat_slot == 1 at EOF. */ - } - /* Make sure we check our delay slots for validity. */ - if (insn.tm->flags & FL_DELAY) - { - delay_slots = 2; - /* FIXME -- warn if delay_slots != 0 at EOF. */ - } - } -} - -/* Do a final adjustment on the symbol table; in this case, make sure we have - a ".file" symbol. */ - -void -tic54x_adjust_symtab () -{ - if (symbol_rootP == NULL - || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) - { - char *filename; - unsigned lineno; - as_where (&filename, &lineno); - c_dot_file_symbol (filename, 0); - } -} - -/* In order to get gas to ignore any | chars at the start of a line, - this function returns true if a | is found in a line. - This lets us process parallel instructions, which span two lines. */ - -int -tic54x_unrecognized_line (int c) -{ - return c == PARALLEL_SEPARATOR; -} - -/* Watch for local labels of the form $[0-9] and [_a-zA-Z][_a-zA-Z0-9]*? - Encode their names so that only we see them and can map them to the - appropriate places. - FIXME -- obviously this isn't done yet. These locals still show up in the - symbol table. */ -void -tic54x_define_label (sym) - symbolS *sym; -{ - /* Just in case we need this later; note that this is not necessarily the - same thing as line_label... - When aligning or assigning labels to fields, sometimes the label is - assigned other than the address at which the label appears. - FIXME -- is this really needed? I think all the proper label assignment - is done in tic54x_cons. */ - last_label_seen = sym; -} - -/* Try to parse something that normal parsing failed at. */ - -symbolS * -tic54x_undefined_symbol (name) - char *name; -{ - symbol *sym; - - /* Not sure how to handle predefined symbols. */ - if ((sym = (symbol *) hash_find (cc_hash, name)) != NULL || - (sym = (symbol *) hash_find (cc2_hash, name)) != NULL || - (sym = (symbol *) hash_find (cc3_hash, name)) != NULL || - (sym = (symbol *) hash_find (misc_symbol_hash, name)) != NULL || - (sym = (symbol *) hash_find (sbit_hash, name)) != NULL) - { - return symbol_new (name, reg_section, - (valueT) sym->value, - &zero_address_frag); - } - - if ((sym = (symbol *) hash_find (reg_hash, name)) != NULL || - (sym = (symbol *) hash_find (mmreg_hash, name)) != NULL || - !strcasecmp (name, "a") || !strcasecmp (name, "b")) - { - return symbol_new (name, reg_section, - (valueT) sym ? sym->value : 0, - &zero_address_frag); - } - - return NULL; -} - -/* Parse a name in an expression before the expression parser takes a stab at - it. */ - -int -tic54x_parse_name (name, exp) - char *name ATTRIBUTE_UNUSED; - expressionS *exp ATTRIBUTE_UNUSED; -{ - return 0; -} - -char * -md_atof (type, literalP, sizeP) - int type; - char *literalP; - int *sizeP; -{ -#define MAX_LITTLENUMS 2 - LITTLENUM_TYPE words[MAX_LITTLENUMS]; - LITTLENUM_TYPE *word; - /* Only one precision on the c54x. */ - int prec = 2; - char *t = atof_ieee (input_line_pointer, type, words); - if (t) - input_line_pointer = t; - *sizeP = 4; - - /* Target data is little-endian, but floats are stored - big-"word"ian. ugh. */ - for (word = words; prec--;) - { - md_number_to_chars (literalP, (long) (*word++), sizeof (LITTLENUM_TYPE)); - literalP += sizeof (LITTLENUM_TYPE); - } - - return 0; -} - -arelent * -tc_gen_reloc (section, fixP) - asection *section; - fixS *fixP; -{ - arelent *rel; - bfd_reloc_code_real_type code = fixP->fx_r_type; - asymbol *sym = symbol_get_bfdsym (fixP->fx_addsy); - - rel = (arelent *) xmalloc (sizeof (arelent)); - rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); - *rel->sym_ptr_ptr = sym; - /* We assume that all rel->address are host byte offsets. */ - rel->address = fixP->fx_frag->fr_address + fixP->fx_where; - rel->address /= OCTETS_PER_BYTE; - rel->howto = bfd_reloc_type_lookup (stdoutput, code); - if (!strcmp (sym->name, section->name)) - rel->howto += HOWTO_BANK; - - if (!rel->howto) - { - const char *name = S_GET_NAME (fixP->fx_addsy); - if (name == NULL) - name = "<unknown>"; - as_fatal ("Cannot generate relocation type for symbol %s, code %s", - name, bfd_get_reloc_code_name (code)); - return NULL; - } - return rel; -} - -/* Handle cons expressions. */ - -void -tic54x_cons_fix_new (frag, where, octets, exp) - fragS *frag; - int where; - int octets; - expressionS *exp; -{ - bfd_reloc_code_real_type r; - - switch (octets) - { - default: - as_bad (_("Unsupported relocation size %d"), octets); - r = BFD_RELOC_TIC54X_16_OF_23; - break; - case 2: - r = BFD_RELOC_TIC54X_16_OF_23; - break; - case 4: - /* TI assembler always uses this, regardless of addressing mode. */ - if (emitting_long) - r = BFD_RELOC_TIC54X_23; - else - /* We never want to directly generate this; this is provided for - stabs support only. */ - r = BFD_RELOC_32; - break; - } - fix_new_exp (frag, where, octets, exp, 0, r); -} - -/* Attempt to simplify or even eliminate a fixup. - To indicate that a fixup has been eliminated, set fixP->fx_done. - - If fixp->fx_addsy is non-NULL, we'll have to generate a reloc entry. */ - -void -md_apply_fix (fixP, valP, seg) - fixS *fixP; - valueT * valP; - segT seg ATTRIBUTE_UNUSED; -{ - char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; - valueT val = * valP; - - switch (fixP->fx_r_type) - { - default: - as_fatal ("Bad relocation type: 0x%02x", fixP->fx_r_type); - return; - case BFD_RELOC_TIC54X_MS7_OF_23: - val = (val >> 16) & 0x7F; - /* Fall through. */ - case BFD_RELOC_TIC54X_16_OF_23: - case BFD_RELOC_16: - bfd_put_16 (stdoutput, val, buf); - /* Indicate what we're actually writing, so that we don't get warnings - about exceeding available space. */ - *valP = val & 0xFFFF; - break; - case BFD_RELOC_TIC54X_PARTLS7: - bfd_put_16 (stdoutput, - (bfd_get_16 (stdoutput, buf) & 0xFF80) | (val & 0x7F), - buf); - /* Indicate what we're actually writing, so that we don't get warnings - about exceeding available space. */ - *valP = val & 0x7F; - break; - case BFD_RELOC_TIC54X_PARTMS9: - /* TI assembler doesn't shift its encoding for relocatable files, and is - thus incompatible with this implementation's relocatable files. */ - bfd_put_16 (stdoutput, - (bfd_get_16 (stdoutput, buf) & 0xFE00) | (val >> 7), - buf); - break; - case BFD_RELOC_32: - case BFD_RELOC_TIC54X_23: - bfd_put_32 (stdoutput, - (bfd_get_32 (stdoutput, buf) & 0xFF800000) | val, - buf); - break; - } - - if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) - fixP->fx_done = 1; -} - -/* This is our chance to record section alignment - don't need to do anything here, since BFD does the proper encoding. */ - -valueT -md_section_align (segment, section_size) - segT segment ATTRIBUTE_UNUSED; - valueT section_size; -{ - return section_size; -} - -long -md_pcrel_from (fixP) - fixS *fixP ATTRIBUTE_UNUSED; -{ - return 0; -} - -/* Mostly little-endian, but longwords (4 octets) get MS word stored - first. */ - -void -tic54x_number_to_chars (buf, val, n) - char *buf; - valueT val; - int n; -{ - if (n != 4) - number_to_chars_littleendian (buf, val, n); - else - { - number_to_chars_littleendian (buf , val >> 16 , 2); - number_to_chars_littleendian (buf + 2, val & 0xFFFF, 2); - } -} - -int -tic54x_estimate_size_before_relax (frag, seg) - fragS *frag ATTRIBUTE_UNUSED; - segT seg ATTRIBUTE_UNUSED; -{ - return 0; -} - -/* We use this to handle bit allocations which we couldn't handle before due - to symbols being in different frags. return number of octets added. */ - -int -tic54x_relax_frag (frag, stretch) - fragS *frag; - long stretch ATTRIBUTE_UNUSED; -{ - symbolS *sym = frag->fr_symbol; - int growth = 0; - int i; - - if (sym != NULL) - { - struct bit_info *bi = (struct bit_info *) frag->fr_opcode; - int bit_offset = frag_bit_offset (frag_prev (frag, bi->seg), bi->seg); - int size = S_GET_VALUE (sym); - fragS *prev_frag = bit_offset_frag (frag_prev (frag, bi->seg), bi->seg); - int available = 16 - bit_offset; - - if (symbol_get_frag (sym) != &zero_address_frag - || S_IS_COMMON (sym) - || !S_IS_DEFINED (sym)) - as_bad_where (frag->fr_file, frag->fr_line, - _("non-absolute value used with .space/.bes")); - - if (size < 0) - { - as_warn (_("negative value ignored in %s"), - bi->type == TYPE_SPACE ? ".space" : - bi->type == TYPE_BES ? ".bes" : ".field"); - growth = 0; - frag->tc_frag_data = frag->fr_fix = 0; - return 0; - } - - if (bi->type == TYPE_FIELD) - { - /* Bit fields of 16 or larger will have already been handled. */ - if (bit_offset != 0 && available >= size) - { - char *p = prev_frag->fr_literal; - - valueT value = bi->value; - value <<= available - size; - value |= ((unsigned short) p[1] << 8) | p[0]; - md_number_to_chars (p, value, 2); - if ((prev_frag->tc_frag_data += size) == 16) - prev_frag->tc_frag_data = 0; - if (bi->sym) - symbol_set_frag (bi->sym, prev_frag); - /* This frag is no longer used. */ - growth = -frag->fr_fix; - frag->fr_fix = 0; - frag->tc_frag_data = 0; - } - else - { - char *p = frag->fr_literal; - - valueT value = bi->value << (16 - size); - md_number_to_chars (p, value, 2); - if ((frag->tc_frag_data = size) == 16) - frag->tc_frag_data = 0; - growth = 0; - } - } - else - { - if (bit_offset != 0 && bit_offset < 16) - { - if (available >= size) - { - if ((prev_frag->tc_frag_data += size) == 16) - prev_frag->tc_frag_data = 0; - if (bi->sym) - symbol_set_frag (bi->sym, prev_frag); - /* This frag is no longer used. */ - growth = -frag->fr_fix; - frag->fr_fix = 0; - frag->tc_frag_data = 0; - goto getout; - } - if (bi->type == TYPE_SPACE && bi->sym) - symbol_set_frag (bi->sym, prev_frag); - size -= available; - } - growth = (size + 15) / 16 * OCTETS_PER_BYTE - frag->fr_fix; - for (i = 0; i < growth; i++) - frag->fr_literal[i] = 0; - frag->fr_fix = growth; - frag->tc_frag_data = size % 16; - /* Make sure any BES label points to the LAST word allocated. */ - if (bi->type == TYPE_BES && bi->sym) - S_SET_VALUE (bi->sym, frag->fr_fix / OCTETS_PER_BYTE - 1); - } - getout: - frag->fr_symbol = 0; - frag->fr_opcode = 0; - free ((void *) bi); - } - return growth; -} - -void -tic54x_convert_frag (abfd, seg, frag) - bfd *abfd ATTRIBUTE_UNUSED; - segT seg ATTRIBUTE_UNUSED; - fragS *frag; -{ - /* Offset is in bytes. */ - frag->fr_offset = (frag->fr_next->fr_address - - frag->fr_address - - frag->fr_fix) / frag->fr_var; - if (frag->fr_offset < 0) - { - as_bad_where (frag->fr_file, frag->fr_line, - _("attempt to .space/.bes backwards? (%ld)"), - (long) frag->fr_offset); - } - frag->fr_type = rs_space; -} - -/* We need to avoid having labels defined for certain directives/pseudo-ops - since once the label is defined, it's in the symbol table for good. TI - syntax puts the symbol *before* the pseudo (which is kinda like MRI syntax, - I guess, except I've never seen a definition of MRI syntax). - - C is the character that used to be at *REST, which points to the end of the - label. - - Don't allow labels to start with '.' */ - -int -tic54x_start_label (c, rest) - int c; - char *rest; -{ - /* If within .struct/.union, no auto line labels, please. */ - if (current_stag != NULL) - return 0; - - /* Disallow labels starting with "." */ - if (c != ':') - { - char *label = rest; - - while (!is_end_of_line[(int) label[-1]]) - --label; - if (*label == '.') - { - as_bad (_("Invalid label '%s'"), label); - return 0; - } - } - - if (is_end_of_line[(int) c]) - return 1; - - if (ISSPACE (c)) - while (ISSPACE (c = *++rest)) - ; - if (c == '.') - { - /* Don't let colon () define a label for any of these... */ - return (strncasecmp (rest, ".tag", 4) != 0 || !ISSPACE (rest[4])) - && (strncasecmp (rest, ".struct", 7) != 0 || !ISSPACE (rest[7])) - && (strncasecmp (rest, ".union", 6) != 0 || !ISSPACE (rest[6])) - && (strncasecmp (rest, ".macro", 6) != 0 || !ISSPACE (rest[6])) - && (strncasecmp (rest, ".set", 4) != 0 || !ISSPACE (rest[4])) - && (strncasecmp (rest, ".equ", 4) != 0 || !ISSPACE (rest[4])); - } - - return 1; -} |